[INFO] cloning repository https://github.com/Asafrose/random-algorithms-homework
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Asafrose/random-algorithms-homework" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAsafrose%2Frandom-algorithms-homework", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAsafrose%2Frandom-algorithms-homework'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0b5b73c9fc2e8685e58b6996fc92f419c475d6d
[INFO] checking Asafrose/random-algorithms-homework against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAsafrose%2Frandom-algorithms-homework" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Asafrose/random-algorithms-homework
[INFO] finished tweaking git repo https://github.com/Asafrose/random-algorithms-homework
[INFO] tweaked toml for git repo https://github.com/Asafrose/random-algorithms-homework written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Asafrose/random-algorithms-homework on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Asafrose/random-algorithms-homework 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 67f0a4b0c34011345ad43b0976deb051ffa70f993642bc51d16d2dde2122d6a0
[INFO] running `Command { std: "docker" "start" "-a" "67f0a4b0c34011345ad43b0976deb051ffa70f993642bc51d16d2dde2122d6a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67f0a4b0c34011345ad43b0976deb051ffa70f993642bc51d16d2dde2122d6a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67f0a4b0c34011345ad43b0976deb051ffa70f993642bc51d16d2dde2122d6a0", kill_on_drop: false }`
[INFO] [stdout] 67f0a4b0c34011345ad43b0976deb051ffa70f993642bc51d16d2dde2122d6a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f38d60fee62575e6c07a88b7a7f7357033ed6cd7171c9e1f36c16880d4e38b60
[INFO] running `Command { std: "docker" "start" "-a" "f38d60fee62575e6c07a88b7a7f7357033ed6cd7171c9e1f36c16880d4e38b60", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling rayon-core v1.9.2
[INFO] [stderr]    Compiling pulldown-cmark v0.9.1
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling rayon v1.5.2
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking nameof v1.2.2
[INFO] [stderr]     Checking clap_lex v0.1.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking pulldown-cmark-to-cmark v10.0.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]     Checking clap v3.1.11
[INFO] [stderr]     Checking clap-md v0.1.0 (https://github.com/Asafrose/clap-md#f39fa6e8)
[INFO] [stderr]     Checking random-algorithms-homework v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/document.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     #[clap(short, long)]
[INFO] [stdout] 11 | |     path: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/q3/matrix.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn iter_mut(&mut self) -> impl Iterator<Item = MatrixRow<TItem>> {
[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] 43 |     pub fn iter_mut(&mut self) -> impl Iterator<Item = MatrixRow<'_, TItem>> {
[INFO] [stdout]    |                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/document.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     #[clap(short, long)]
[INFO] [stdout] 11 | |     path: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/q3/matrix.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn iter_mut(&mut self) -> impl Iterator<Item = MatrixRow<TItem>> {
[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] 43 |     pub fn iter_mut(&mut self) -> impl Iterator<Item = MatrixRow<'_, TItem>> {
[INFO] [stdout]    |                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `random-algorithms-homework` (bin "random-algorithms-homework" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `random-algorithms-homework` (bin "random-algorithms-homework") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "f38d60fee62575e6c07a88b7a7f7357033ed6cd7171c9e1f36c16880d4e38b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f38d60fee62575e6c07a88b7a7f7357033ed6cd7171c9e1f36c16880d4e38b60", kill_on_drop: false }`
[INFO] [stdout] f38d60fee62575e6c07a88b7a7f7357033ed6cd7171c9e1f36c16880d4e38b60