[INFO] cloning repository https://github.com/webern/rs_book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/webern/rs_book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwebern%2Frs_book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwebern%2Frs_book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1d8d67014f7b2bb78519c3a71c142f73e5f22d5
[INFO] testing webern/rs_book against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwebern%2Frs_book" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/webern/rs_book
[INFO] finished tweaking git repo https://github.com/webern/rs_book
[INFO] tweaked toml for git repo https://github.com/webern/rs_book written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/webern/rs_book on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/webern/rs_book already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11fe2e653c6737f2df16082b132d68354648863b18949327d38851e15f1f80c8
[INFO] running `Command { std: "docker" "start" "-a" "11fe2e653c6737f2df16082b132d68354648863b18949327d38851e15f1f80c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11fe2e653c6737f2df16082b132d68354648863b18949327d38851e15f1f80c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11fe2e653c6737f2df16082b132d68354648863b18949327d38851e15f1f80c8", kill_on_drop: false }`
[INFO] [stdout] 11fe2e653c6737f2df16082b132d68354648863b18949327d38851e15f1f80c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2edd21ad8996fa47848dff7f6a55db57f2999eea3bf81ef3839bf0284a632e0d
[INFO] running `Command { std: "docker" "start" "-a" "2edd21ad8996fa47848dff7f6a55db57f2999eea3bf81ef3839bf0284a632e0d", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-10a-generics v5.6.1 (/opt/rustwide/workdir/chapter-10a-generics/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-10a-generics v5.6.1 (/opt/rustwide/workdir/chapter-10a-generics/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-8 v5.6.1 (/opt/rustwide/workdir/chapter-8/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-8 v5.6.1 (/opt/rustwide/workdir/chapter-8/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling rustix v0.38.21
[INFO] [stderr]    Compiling linux-raw-sys v0.4.10
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling fastrand v2.0.1
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling serde v1.0.192
[INFO] [stderr]    Compiling hashbrown v0.14.2
[INFO] [stderr]    Compiling anstyle v1.0.4
[INFO] [stderr]    Compiling anstyle-parse v0.2.2
[INFO] [stderr]    Compiling portable-atomic v1.5.1
[INFO] [stderr]    Compiling clap_lex v0.6.0
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling winnow v0.5.19
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling walkdir v2.4.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling anstream v0.6.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling eyre v0.6.9
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling clap_builder v4.4.8
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]    Compiling home v0.5.5
[INFO] [stderr]    Compiling c_multiple_crates v0.1.0 (/opt/rustwide/workdir/chapter-7/c_multiple_crates)
[INFO] [stderr]    Compiling indexmap v2.1.0
[INFO] [stderr]    Compiling chapter-10-traits-lib v0.1.0 (/opt/rustwide/workdir/chapter-10-traits-lib)
[INFO] [stderr]    Compiling d_custom_crate_files v0.1.0 (/opt/rustwide/workdir/chapter-7/d_custom_crate_files)
[INFO] [stderr]    Compiling chapter-10b-traits v0.1.0 (/opt/rustwide/workdir/chapter-10b-traits)
[INFO] [stderr]    Compiling chapter-18 v0.1.0 (/opt/rustwide/workdir/chapter-18)
[INFO] [stderr]    Compiling chapter-8 v0.1.0 (/opt/rustwide/workdir/chapter-8)
[INFO] [stderr]    Compiling chapter-17 v0.1.0 (/opt/rustwide/workdir/chapter-17)
[INFO] [stderr]    Compiling chapter-13 v0.1.0 (/opt/rustwide/workdir/chapter-13)
[INFO] [stdout] warning: value assigned to `setting_value` is never read
[INFO] [stdout]    --> chapter-18/src/main.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |             setting_value = new_setting_value;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `x:` in this pattern is redundant
[INFO] [stdout]   --> chapter-18/src/main.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Point { x: x, y: y } => {
[INFO] [stdout]    |                 ^^^^ help: use shorthand field pattern: `x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `y:` in this pattern is redundant
[INFO] [stdout]   --> chapter-18/src/main.rs:62:23
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Point { x: x, y: y } => {
[INFO] [stdout]    |                       ^^^^ help: use shorthand field pattern: `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chapter-14 v0.1.0 (/opt/rustwide/workdir/chapter-14)
[INFO] [stderr]    Compiling chapter-15 v0.1.0 (/opt/rustwide/workdir/chapter-15)
[INFO] [stderr]    Compiling chapter-16 v0.1.0 (/opt/rustwide/workdir/chapter-16)
[INFO] [stderr]    Compiling b_standard_library v0.1.0 (/opt/rustwide/workdir/chapter-7/b_normal_library)
[INFO] [stderr]    Compiling chapter-5 v0.1.0 (/opt/rustwide/workdir/chapter-5)
[INFO] [stderr]    Compiling chapter-10c-lifetimes v0.1.0 (/opt/rustwide/workdir/chapter-10c-lifetimes)
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]   --> chapter-10c-lifetimes/src/main.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[cfg(does_not_compile)]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]   --> chapter-10c-lifetimes/src/main.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[cfg(does_not_compile)]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]   --> chapter-10c-lifetimes/src/main.rs:87:7
[INFO] [stdout]    |
[INFO] [stdout] 87 | #[cfg(does_not_compile)]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]    --> chapter-10c-lifetimes/src/main.rs:134:7
[INFO] [stdout]     |
[INFO] [stdout] 134 | #[cfg(does_not_compile)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]    --> chapter-10c-lifetimes/src/main.rs:148:7
[INFO] [stdout]     |
[INFO] [stdout] 148 | #[cfg(does_not_compile)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling filetime v0.2.22
[INFO] [stderr]    Compiling console v0.15.7
[INFO] [stderr]    Compiling chapter-4 v0.1.0 (/opt/rustwide/workdir/chapter-4)
[INFO] [stderr]    Compiling chapter-10a v0.1.0 (/opt/rustwide/workdir/chapter-10a-generics)
[INFO] [stderr]    Compiling chapter-6 v0.1.0 (/opt/rustwide/workdir/chapter-6)
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling indicatif v0.17.7
[INFO] [stderr]    Compiling e_pub_vs_private v0.1.0 (/opt/rustwide/workdir/chapter-7/e_pub_vs_private)
[INFO] [stderr]    Compiling a_standard_binary v0.1.0 (/opt/rustwide/workdir/chapter-7/a_normal_binary)
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling tempfile v3.8.1
[INFO] [stderr]    Compiling chapter-12 v0.1.0 (/opt/rustwide/workdir/chapter-12)
[INFO] [stderr]    Compiling chapter-11 v0.1.0 (/opt/rustwide/workdir/chapter-11)
[INFO] [stderr]    Compiling chapter-3 v0.1.0 (/opt/rustwide/workdir/chapter-3)
[INFO] [stdout] warning: unused variable: `query`
[INFO] [stdout]   --> chapter-12/src/bin/listing_16.rs:54:19
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stdout]    |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_query`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> chapter-12/src/bin/listing_16.rs:54:32
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stdout]    |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.192
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling snafu-derive v0.7.5
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling clap v4.4.8
[INFO] [stderr]    Compiling snafu v0.7.5
[INFO] [stderr]    Compiling chapter-9 v0.1.0 (/opt/rustwide/workdir/chapter-9)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> chapter-9/src/lib.rs:136:57
[INFO] [stdout]     |
[INFO] [stdout] 136 |             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout]     |                                                         ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 136 -             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout] 136 +             self.source.as_ref().map(|e| e.as_ref() as &dyn Error)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> chapter-9/src/lib.rs:209:57
[INFO] [stdout]     |
[INFO] [stdout] 209 |             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout]     |                                                         ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 209 -             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout] 209 +             self.source.as_ref().map(|e| e.as_ref() as &dyn Error)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling serde_spanned v0.6.4
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling toml v0.7.8
[INFO] [stderr]    Compiling rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-10a-generics v5.6.1 (/opt/rustwide/workdir/chapter-10a-generics/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-8 v5.6.1 (/opt/rustwide/workdir/chapter-8/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-7/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-8/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-15/rustlings/src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-10a-generics/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-16/rustlings/src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-13/rustlings/src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-6/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.68s
[INFO] running `Command { std: "docker" "inspect" "2edd21ad8996fa47848dff7f6a55db57f2999eea3bf81ef3839bf0284a632e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2edd21ad8996fa47848dff7f6a55db57f2999eea3bf81ef3839bf0284a632e0d", kill_on_drop: false }`
[INFO] [stdout] 2edd21ad8996fa47848dff7f6a55db57f2999eea3bf81ef3839bf0284a632e0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad62faac404881e426c6c0ae3536ddd03d363881013306fb58635860458fa377
[INFO] running `Command { std: "docker" "start" "-a" "ad62faac404881e426c6c0ae3536ddd03d363881013306fb58635860458fa377", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-10a-generics v5.6.1 (/opt/rustwide/workdir/chapter-10a-generics/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-10a-generics v5.6.1 (/opt/rustwide/workdir/chapter-10a-generics/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-8 v5.6.1 (/opt/rustwide/workdir/chapter-8/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-8 v5.6.1 (/opt/rustwide/workdir/chapter-8/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling predicates-core v1.0.6
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling termtree v0.4.1
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling chapter-10b-traits v0.1.0 (/opt/rustwide/workdir/chapter-10b-traits)
[INFO] [stderr]    Compiling c_multiple_crates v0.1.0 (/opt/rustwide/workdir/chapter-7/c_multiple_crates)
[INFO] [stderr]    Compiling d_custom_crate_files v0.1.0 (/opt/rustwide/workdir/chapter-7/d_custom_crate_files)
[INFO] [stderr]    Compiling chapter-12 v0.1.0 (/opt/rustwide/workdir/chapter-12)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> chapter-9/src/lib.rs:136:57
[INFO] [stdout]     |
[INFO] [stdout] 136 |             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout]     |                                                         ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 136 -             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout] 136 +             self.source.as_ref().map(|e| e.as_ref() as &dyn Error)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> chapter-9/src/lib.rs:209:57
[INFO] [stdout]     |
[INFO] [stdout] 209 |             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout]     |                                                         ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 209 -             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout] 209 +             self.source.as_ref().map(|e| e.as_ref() as &dyn Error)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chapter-9 v0.1.0 (/opt/rustwide/workdir/chapter-9)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> chapter-9/src/lib.rs:136:57
[INFO] [stdout]     |
[INFO] [stdout] 136 |             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout]     |                                                         ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 136 -             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout] 136 +             self.source.as_ref().map(|e| e.as_ref() as &dyn Error)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> chapter-9/src/lib.rs:209:57
[INFO] [stdout]     |
[INFO] [stdout] 209 |             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout]     |                                                         ^         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 209 -             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stdout] 209 +             self.source.as_ref().map(|e| e.as_ref() as &dyn Error)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `query`
[INFO] [stdout]   --> chapter-12/src/bin/listing_16.rs:54:19
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stdout]    |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_query`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> chapter-12/src/bin/listing_16.rs:54:32
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stdout]    |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling predicates-tree v1.0.9
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling chapter-11 v0.1.0 (/opt/rustwide/workdir/chapter-11)
[INFO] [stderr]    Compiling chapter-3 v0.1.0 (/opt/rustwide/workdir/chapter-3)
[INFO] [stderr]    Compiling chapter-8 v0.1.0 (/opt/rustwide/workdir/chapter-8)
[INFO] [stderr]    Compiling chapter-18 v0.1.0 (/opt/rustwide/workdir/chapter-18)
[INFO] [stderr]    Compiling chapter-13 v0.1.0 (/opt/rustwide/workdir/chapter-13)
[INFO] [stderr]    Compiling chapter-16 v0.1.0 (/opt/rustwide/workdir/chapter-16)
[INFO] [stderr]    Compiling chapter-17 v0.1.0 (/opt/rustwide/workdir/chapter-17)
[INFO] [stderr]    Compiling chapter-15 v0.1.0 (/opt/rustwide/workdir/chapter-15)
[INFO] [stdout] warning: value assigned to `setting_value` is never read
[INFO] [stdout]    --> chapter-18/src/main.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |             setting_value = new_setting_value;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `x:` in this pattern is redundant
[INFO] [stdout]   --> chapter-18/src/main.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Point { x: x, y: y } => {
[INFO] [stdout]    |                 ^^^^ help: use shorthand field pattern: `x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the `y:` in this pattern is redundant
[INFO] [stdout]   --> chapter-18/src/main.rs:62:23
[INFO] [stdout]    |
[INFO] [stdout] 62 |         Point { x: x, y: y } => {
[INFO] [stdout]    |                       ^^^^ help: use shorthand field pattern: `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling chapter-14 v0.1.0 (/opt/rustwide/workdir/chapter-14)
[INFO] [stderr]    Compiling a_standard_binary v0.1.0 (/opt/rustwide/workdir/chapter-7/a_normal_binary)
[INFO] [stderr]    Compiling chapter-10c-lifetimes v0.1.0 (/opt/rustwide/workdir/chapter-10c-lifetimes)
[INFO] [stderr]    Compiling chapter-5 v0.1.0 (/opt/rustwide/workdir/chapter-5)
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]   --> chapter-10c-lifetimes/src/main.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[cfg(does_not_compile)]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]   --> chapter-10c-lifetimes/src/main.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[cfg(does_not_compile)]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]   --> chapter-10c-lifetimes/src/main.rs:87:7
[INFO] [stdout]    |
[INFO] [stdout] 87 | #[cfg(does_not_compile)]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]    --> chapter-10c-lifetimes/src/main.rs:134:7
[INFO] [stdout]     |
[INFO] [stdout] 134 | #[cfg(does_not_compile)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stdout]    --> chapter-10c-lifetimes/src/main.rs:148:7
[INFO] [stdout]     |
[INFO] [stdout] 148 | #[cfg(does_not_compile)]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling b_standard_library v0.1.0 (/opt/rustwide/workdir/chapter-7/b_normal_library)
[INFO] [stderr]    Compiling chapter-10-traits-lib v0.1.0 (/opt/rustwide/workdir/chapter-10-traits-lib)
[INFO] [stderr]    Compiling chapter-10a v0.1.0 (/opt/rustwide/workdir/chapter-10a-generics)
[INFO] [stderr]    Compiling chapter-6 v0.1.0 (/opt/rustwide/workdir/chapter-6)
[INFO] [stderr]    Compiling chapter-4 v0.1.0 (/opt/rustwide/workdir/chapter-4)
[INFO] [stderr]    Compiling e_pub_vs_private v0.1.0 (/opt/rustwide/workdir/chapter-7/e_pub_vs_private)
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling bstr v1.8.0
[INFO] [stderr]    Compiling predicates v3.0.4
[INFO] [stderr]    Compiling assert_cmd v2.0.12
[INFO] [stderr]    Compiling rustlings-chapter-10a-generics v5.6.1 (/opt/rustwide/workdir/chapter-10a-generics/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-8 v5.6.1 (/opt/rustwide/workdir/chapter-8/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)
[INFO] [stderr]    Compiling rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-16/rustlings/src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-7/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-8/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-15/rustlings/src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-13/rustlings/src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-10a-generics/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-6/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-10a-generics/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-7/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-8/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-13/rustlings/src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-6/rustlings/src/exercise.rs:111:20
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-15/rustlings/src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> chapter-16/rustlings/src/exercise.rs:110:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stdout]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stdout]     |                                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 22.94s
[INFO] running `Command { std: "docker" "inspect" "ad62faac404881e426c6c0ae3536ddd03d363881013306fb58635860458fa377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad62faac404881e426c6c0ae3536ddd03d363881013306fb58635860458fa377", kill_on_drop: false }`
[INFO] [stdout] ad62faac404881e426c6c0ae3536ddd03d363881013306fb58635860458fa377
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0dc56722c46476f9f494e2a5e9621c9b3f4929120f001a96922160c6a1dfd272
[INFO] running `Command { std: "docker" "start" "-a" "0dc56722c46476f9f494e2a5e9621c9b3f4929120f001a96922160c6a1dfd272", kill_on_drop: false }`
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-10a-generics v5.6.1 (/opt/rustwide/workdir/chapter-10a-generics/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-10a-generics v5.6.1 (/opt/rustwide/workdir/chapter-10a-generics/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-13 v5.6.1 (/opt/rustwide/workdir/chapter-13/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-15 v5.6.1 (/opt/rustwide/workdir/chapter-15/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-17 v5.6.1 (/opt/rustwide/workdir/chapter-16/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-6 v5.6.1 (/opt/rustwide/workdir/chapter-6/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-8 v5.6.1 (/opt/rustwide/workdir/chapter-8/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: output filename collision.
[INFO] [stderr] The bin target `rustlings` in package `rustlings-chapter-8 v5.6.1 (/opt/rustwide/workdir/chapter-8/rustlings)` has the same output filename as the bin target `rustlings` in package `rustlings-chapter-7 v5.6.1 (/opt/rustwide/workdir/chapter-7/rustlings)`.
[INFO] [stderr] Colliding filename is: /opt/rustwide/target/debug/rustlings.dwp
[INFO] [stderr] The targets should have unique names.
[INFO] [stderr] Consider changing their names to be unique or compiling them separately.
[INFO] [stderr] This may become a hard error in the future; see <https://github.com/rust-lang/cargo/issues/6313>.
[INFO] [stderr] warning: unused variable: `query`
[INFO] [stderr]   --> chapter-12/src/bin/listing_16.rs:54:19
[INFO] [stderr]    |
[INFO] [stderr] 54 | pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stderr]    |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_query`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `contents`
[INFO] [stderr]   --> chapter-12/src/bin/listing_16.rs:54:32
[INFO] [stderr]    |
[INFO] [stderr] 54 | pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str> {
[INFO] [stderr]    |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stderr] 
[INFO] [stderr] warning: `chapter-12` (bin "listing_16" test) generated 2 warnings
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> chapter-9/src/lib.rs:136:57
[INFO] [stderr]     |
[INFO] [stderr] 136 |             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stderr]     |                                                         ^         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 136 -             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stderr] 136 +             self.source.as_ref().map(|e| e.as_ref() as &dyn Error)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> chapter-9/src/lib.rs:209:57
[INFO] [stderr]     |
[INFO] [stderr] 209 |             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stderr]     |                                                         ^         ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 209 -             self.source.as_ref().map(|e| e.as_ref() as &(dyn Error))
[INFO] [stderr] 209 +             self.source.as_ref().map(|e| e.as_ref() as &dyn Error)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> chapter-10a-generics/rustlings/src/exercise.rs:111:20
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stderr]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> chapter-13/rustlings/src/exercise.rs:110:20
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stderr]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> chapter-15/rustlings/src/exercise.rs:110:20
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stderr]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> chapter-7/rustlings/src/exercise.rs:111:20
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stderr]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> chapter-8/rustlings/src/exercise.rs:111:20
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stderr]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> chapter-16/rustlings/src/exercise.rs:110:20
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stderr]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `chapter-9` (lib) generated 2 warnings (run `cargo fix --lib -p chapter-9` to apply 2 suggestions)
[INFO] [stderr] warning: `rustlings-chapter-10a-generics` (bin "rustlings") generated 1 warning (run `cargo fix --bin "rustlings"` to apply 1 suggestion)
[INFO] [stderr] warning: `rustlings-chapter-13` (bin "rustlings") generated 1 warning (run `cargo fix --bin "rustlings"` to apply 1 suggestion)
[INFO] [stderr] warning: `rustlings-chapter-15` (bin "rustlings") generated 1 warning (run `cargo fix --bin "rustlings"` to apply 1 suggestion)
[INFO] [stderr] warning: `chapter-9` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: `rustlings-chapter-7` (bin "rustlings") generated 1 warning (run `cargo fix --bin "rustlings"` to apply 1 suggestion)
[INFO] [stderr] warning: `rustlings-chapter-13` (bin "rustlings" test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `rustlings-chapter-15` (bin "rustlings" test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `rustlings-chapter-8` (bin "rustlings" test) generated 1 warning (run `cargo fix --bin "rustlings" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `rustlings-chapter-17` (bin "rustlings" test) generated 1 warning (run `cargo fix --bin "rustlings" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> chapter-6/rustlings/src/exercise.rs:111:20
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn compile(&self) -> Result<CompiledExercise, ExerciseOutput> {
[INFO] [stderr]     |                    ^^^^^            ^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn compile(&self) -> Result<CompiledExercise<'_>, ExerciseOutput> {
[INFO] [stderr]     |                                                     ++++
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `setting_value` is never read
[INFO] [stderr]    --> chapter-18/src/main.rs:128:13
[INFO] [stderr]     |
[INFO] [stderr] 128 |             setting_value = new_setting_value;
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the `x:` in this pattern is redundant
[INFO] [stderr]   --> chapter-18/src/main.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |         Point { x: x, y: y } => {
[INFO] [stderr]    |                 ^^^^ help: use shorthand field pattern: `x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_shorthand_field_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the `y:` in this pattern is redundant
[INFO] [stderr]   --> chapter-18/src/main.rs:62:23
[INFO] [stderr]    |
[INFO] [stderr] 62 |         Point { x: x, y: y } => {
[INFO] [stderr]    |                       ^^^^ help: use shorthand field pattern: `y`
[INFO] [stderr] 
[INFO] [stderr] warning: `rustlings-chapter-8` (bin "rustlings") generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `rustlings-chapter-7` (bin "rustlings" test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `rustlings-chapter-17` (bin "rustlings") generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `rustlings-chapter-10a-generics` (bin "rustlings" test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `rustlings-chapter-6` (bin "rustlings" test) generated 1 warning (run `cargo fix --bin "rustlings" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `rustlings-chapter-6` (bin "rustlings") generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `chapter-18` (bin "chapter-18" test) generated 3 warnings (run `cargo fix --bin "chapter-18" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stderr]   --> chapter-10c-lifetimes/src/main.rs:13:7
[INFO] [stderr]    |
[INFO] [stderr] 13 | #[cfg(does_not_compile)]
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stderr]    = help: consider using a Cargo feature instead
[INFO] [stderr]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]             [lints.rust]
[INFO] [stderr]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stderr]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stderr]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stderr]   --> chapter-10c-lifetimes/src/main.rs:29:7
[INFO] [stderr]    |
[INFO] [stderr] 29 | #[cfg(does_not_compile)]
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a Cargo feature instead
[INFO] [stderr]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]             [lints.rust]
[INFO] [stderr]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stderr]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stderr]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stderr]   --> chapter-10c-lifetimes/src/main.rs:87:7
[INFO] [stderr]    |
[INFO] [stderr] 87 | #[cfg(does_not_compile)]
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a Cargo feature instead
[INFO] [stderr]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]             [lints.rust]
[INFO] [stderr]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stderr]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stderr]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stderr]    --> chapter-10c-lifetimes/src/main.rs:134:7
[INFO] [stderr]     |
[INFO] [stderr] 134 | #[cfg(does_not_compile)]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `does_not_compile`
[INFO] [stderr]    --> chapter-10c-lifetimes/src/main.rs:148:7
[INFO] [stderr]     |
[INFO] [stderr] 148 | #[cfg(does_not_compile)]
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider using a Cargo feature instead
[INFO] [stderr]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]              [lints.rust]
[INFO] [stderr]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(does_not_compile)'] }
[INFO] [stderr]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(does_not_compile)");` to the top of the `build.rs`
[INFO] [stderr]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: `chapter-10c-lifetimes` (bin "chapter-10c-lifetimes" test) generated 5 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/a_standard_binary-0fecb0ad34873667)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/b_standard_library-8a5de5b5d33790b0)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/c_multiple_crates-a3af020ef21ef461)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/goodbye_world.rs (/opt/rustwide/target/debug/deps/goodbye_world-278b55c143b160ca)
[INFO] [stderr]      Running unittests src/bin/hello_world.rs (/opt/rustwide/target/debug/deps/hello_world-e1831e1091db8b75)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/chapter_10_traits_lib-9c707578728ab8e6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chapter_10a-2da8a6386c8112ab)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chapter_10b_traits-df846bfcc836f935)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chapter_10c_lifetimes-396a2f35e3b17c6a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/chapter_11-eb9708eee8db75c7)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test compile_guarded::a_test ... ok
[INFO] [stdout] test output::example ... ok
[INFO] [stdout] test rant_about_loops::trim_test_1_leading_space ... ok
[INFO] [stdout] test isolated::bad_test_2 ... ok
[INFO] [stdout] test rant_about_loops::trim_test_2_trailing_space ... ok
[INFO] [stdout] test rant_about_loops::i_hate_this ... ok
[INFO] [stdout] test isolated::good_test ... ok
[INFO] [stdout] test isolated::bad_test_1 ... ok
[INFO] [stdout] test rant_about_loops::trim_test_3_leading_and_trailing ... ok
[INFO] [stdout] test integ_discussion::unit_test ... ok
[INFO] [stdout] test tests_returning_results::returns_a_result ... FAILED
[INFO] [stdout] test be_assertive::a_some_assertions ... FAILED
[INFO] [stderr] error: test failed, to rerun pass `-p chapter-11 --lib`
[INFO] [stdout] test should_panic_tests::reliable_test - should panic ... FAILED
[INFO] [stdout] test everybody_panic::panic_is_ok - should panic ... ok
[INFO] [stdout] test should_panic_tests::unreliable_test - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests_returning_results::returns_a_result stdout ----
[INFO] [stdout] Error: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] ---- be_assertive::a_some_assertions stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'be_assertive::a_some_assertions' (34) panicked at chapter-11/src/lib.rs:216:9:
[INFO] [stdout] assertion `left == right` failed: 'double(3)' should return '6'
[INFO] [stdout]   left: 7
[INFO] [stdout]  right: 6
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x57b3424c2482 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x57b3424c2482 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x57b3424c2482 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x57b3424c2482 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x57b3424d286f - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x57b3424d286f - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x57b34248ec91 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x57b34248ec91 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x57b34249b5b2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x57b3424a02df - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x57b3424a0171 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x57b34245660e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x57b34245660e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x57b3424a099f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x57b3424a099f - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x57b3424a07fa - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x57b34249b6e9 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x57b3424822fd - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x57b3424da280 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x57b3424da113 - core::panicking::assert_failed_inner::h448e1d534f4c3d4b
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:434:23
[INFO] [stdout]   20:     0x57b3424afb9c - core::panicking::assert_failed::h0d15de03de2e06c1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:394:5
[INFO] [stdout]   21:     0x57b34242e808 - chapter_11::be_assertive::a_some_assertions::h97ac3c3e1e19621a
[INFO] [stdout]                                at /opt/rustwide/workdir/chapter-11/src/lib.rs:216:9
[INFO] [stdout]   22:     0x57b34242e827 - chapter_11::be_assertive::a_some_assertions::{{closure}}::h54b32a27babd6289
[INFO] [stdout]                                at /opt/rustwide/workdir/chapter-11/src/lib.rs:206:27
[INFO] [stdout]   23:     0x57b342430056 - core::ops::function::FnOnce::call_once::h17cc26d51c89fb36
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x57b3424563cb - core::ops::function::FnOnce::call_once::h70887edf07a630ba
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x57b3424563cb - test::__rust_begin_short_backtrace::h27763c4cbbdb8601
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x57b34246c035 - test::run_test_in_process::{{closure}}::h4dc8bc6d5e3924d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x57b34246c035 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h75905e8ffe81974f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x57b34246c035 - std::panicking::catch_unwind::do_call::h0bc60366ba66eba5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x57b34246c035 - std::panicking::catch_unwind::hae1ec7bf94407afa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x57b34246c035 - std::panic::catch_unwind::h0f4ff4773d84d3cd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x57b34246c035 - test::run_test_in_process::h03fbc77ae48b3f10
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x57b34246c035 - test::run_test::{{closure}}::h83476a9c453dc4d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x57b342442824 - test::run_test::{{closure}}::h515482ad1e7fe7de
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x57b342442824 - std::sys::backtrace::__rust_begin_short_backtrace::hed09f6ac5fe9d647
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x57b3424460ea - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h988e2cd969319888
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x57b3424460ea - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd70e28dc46ec20be
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x57b3424460ea - std::panicking::catch_unwind::do_call::hdc29e11311eb7655
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x57b3424460ea - std::panicking::catch_unwind::h9e402d6a96fef41c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x57b3424460ea - std::panic::catch_unwind::h9213c0c54aec70e0
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x57b3424460ea - std::thread::Builder::spawn_unchecked_::{{closure}}::h6262965869ed2b87
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x57b3424460ea - core::ops::function::FnOnce::call_once{{vtable.shim}}::h05c05ed02619e462
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x57b34249684f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   43:     0x57b34249684f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   44:     0x7a37dde94aa4 - <unknown>
[INFO] [stdout]   45:     0x7a37ddf21a34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- should_panic_tests::reliable_test stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'should_panic_tests::reliable_test' (46) panicked at chapter-11/src/lib.rs:225:22:
[INFO] [stdout] attempt to subtract with overflow
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x57b3424c2482 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x57b3424c2482 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x57b3424c2482 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x57b3424c2482 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x57b3424d286f - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x57b3424d286f - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x57b34248ec91 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x57b34248ec91 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x57b34249b5b2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x57b3424a02df - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x57b3424a0171 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x57b34245660e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x57b34245660e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x57b3424a099f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x57b3424a099f - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x57b3424a07c6 - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x57b34249b6e9 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x57b3424822fd - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x57b3424da280 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x57b3424d9e67 - core::panicking::panic_const::panic_const_sub_overflow::hbe2f8b42373cfcaa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:175:17
[INFO] [stdout]   20:     0x57b34242f0fa - chapter_11::should_panic_tests::gimme_a_value_greater_than_10::hf71501cabb97065d
[INFO] [stdout]                                at /opt/rustwide/workdir/chapter-11/src/lib.rs:225:22
[INFO] [stdout]   21:     0x57b34242f048 - chapter_11::should_panic_tests::reliable_test::h190cb35e23eb2c7e
[INFO] [stdout]                                at /opt/rustwide/workdir/chapter-11/src/lib.rs:246:17
[INFO] [stdout]   22:     0x57b34242f067 - chapter_11::should_panic_tests::reliable_test::{{closure}}::hbec669d4e1f30034
[INFO] [stdout]                                at /opt/rustwide/workdir/chapter-11/src/lib.rs:245:23
[INFO] [stdout]   23:     0x57b342430156 - core::ops::function::FnOnce::call_once::h443fe998a80a5e34
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x57b3424563cb - core::ops::function::FnOnce::call_once::h70887edf07a630ba
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x57b3424563cb - test::__rust_begin_short_backtrace::h27763c4cbbdb8601
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x57b34246c035 - test::run_test_in_process::{{closure}}::h4dc8bc6d5e3924d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x57b34246c035 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h75905e8ffe81974f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x57b34246c035 - std::panicking::catch_unwind::do_call::h0bc60366ba66eba5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x57b34246c035 - std::panicking::catch_unwind::hae1ec7bf94407afa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x57b34246c035 - std::panic::catch_unwind::h0f4ff4773d84d3cd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x57b34246c035 - test::run_test_in_process::h03fbc77ae48b3f10
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x57b34246c035 - test::run_test::{{closure}}::h83476a9c453dc4d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x57b342442824 - test::run_test::{{closure}}::h515482ad1e7fe7de
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x57b342442824 - std::sys::backtrace::__rust_begin_short_backtrace::hed09f6ac5fe9d647
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x57b3424460ea - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h988e2cd969319888
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x57b3424460ea - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd70e28dc46ec20be
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x57b3424460ea - std::panicking::catch_unwind::do_call::hdc29e11311eb7655
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x57b3424460ea - std::panicking::catch_unwind::h9e402d6a96fef41c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x57b3424460ea - std::panic::catch_unwind::h9213c0c54aec70e0
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x57b3424460ea - std::thread::Builder::spawn_unchecked_::{{closure}}::h6262965869ed2b87
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x57b3424460ea - core::ops::function::FnOnce::call_once{{vtable.shim}}::h05c05ed02619e462
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x57b34249684f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   43:     0x57b34249684f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   44:     0x7a37dde94aa4 - <unknown>
[INFO] [stdout]   45:     0x7a37ddf21a34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] note: panic did not contain expected string
[INFO] [stdout]       panic message: "attempt to subtract with overflow"
[INFO] [stdout]  expected substring: "too high"
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     be_assertive::a_some_assertions
[INFO] [stdout]     should_panic_tests::reliable_test
[INFO] [stdout]     tests_returning_results::returns_a_result
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 12 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0dc56722c46476f9f494e2a5e9621c9b3f4929120f001a96922160c6a1dfd272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dc56722c46476f9f494e2a5e9621c9b3f4929120f001a96922160c6a1dfd272", kill_on_drop: false }`
[INFO] [stdout] 0dc56722c46476f9f494e2a5e9621c9b3f4929120f001a96922160c6a1dfd272
