[INFO] fetching crate grrs 0.1.0...
[INFO] building grrs-0.1.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate grrs 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate grrs 0.1.0
[INFO] finished tweaking crates.io crate grrs 0.1.0
[INFO] tweaked toml for crates.io crate grrs 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate grrs 0.1.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 75 packages to latest compatible versions
[INFO] [stderr]       Adding assert_cmd v0.10.2 (available: v2.0.17)
[INFO] [stderr]       Adding predicates v1.0.8 (available: v3.1.3)
[INFO] [stderr]       Adding structopt v0.2.18 (available: v0.3.26)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded float-cmp v0.8.0
[INFO] [stderr]   Downloaded structopt-derive v0.2.18
[INFO] [stderr]   Downloaded structopt v0.2.18
[INFO] [stderr]   Downloaded assert_cmd v0.10.2
[INFO] [stderr]   Downloaded escargot v0.3.1
[INFO] [stderr]   Downloaded exitfailure v0.5.1
[INFO] [stderr]   Downloaded predicates v1.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dad327387e26cf2d10c17df58d13c04db35d25880c8178857ae1bb87ec841c6
[INFO] running `Command { std: "docker" "start" "-a" "2dad327387e26cf2d10c17df58d13c04db35d25880c8178857ae1bb87ec841c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dad327387e26cf2d10c17df58d13c04db35d25880c8178857ae1bb87ec841c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dad327387e26cf2d10c17df58d13c04db35d25880c8178857ae1bb87ec841c6", kill_on_drop: false }`
[INFO] [stdout] 2dad327387e26cf2d10c17df58d13c04db35d25880c8178857ae1bb87ec841c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46d6bbf9ca826a6ff7f3c37b0a611a2971f1b229d4d6d19a70b555bff3533e74
[INFO] running `Command { std: "docker" "start" "-a" "46d6bbf9ca826a6ff7f3c37b0a611a2971f1b229d4d6d19a70b555bff3533e74", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]    Compiling predicates-core v1.0.9
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling termtree v0.5.1
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling predicates-tree v1.0.12
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling tempfile v3.23.0
[INFO] [stderr]    Compiling exitfailure v0.5.1
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling assert_cmd v0.10.2
[INFO] [stderr]    Compiling grrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/lib.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     writer: &mut std::io::Write,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     writer: &mut dyn std::io::Write,
[INFO] [stdout]   |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.60s
[INFO] running `Command { std: "docker" "inspect" "46d6bbf9ca826a6ff7f3c37b0a611a2971f1b229d4d6d19a70b555bff3533e74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46d6bbf9ca826a6ff7f3c37b0a611a2971f1b229d4d6d19a70b555bff3533e74", kill_on_drop: false }`
[INFO] [stdout] 46d6bbf9ca826a6ff7f3c37b0a611a2971f1b229d4d6d19a70b555bff3533e74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b891606752067a1b21e26f3f62c11c07ac6c918a00f066df7a3babf55efab4b3
[INFO] running `Command { std: "docker" "start" "-a" "b891606752067a1b21e26f3f62c11c07ac6c918a00f066df7a3babf55efab4b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling grrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/lib.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     writer: &mut std::io::Write,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     writer: &mut dyn std::io::Write,
[INFO] [stdout]   |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> tests/cli.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> tests/cli.rs:8:42
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn file_doesnt_exist() -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn file_doesnt_exist() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]   |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/cli.rs:19:45
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn find_content_in_file() -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn find_content_in_file() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/lib.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     writer: &mut std::io::Write,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     writer: &mut dyn std::io::Write,
[INFO] [stdout]   |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     grrs::find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let _ = grrs::find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "b891606752067a1b21e26f3f62c11c07ac6c918a00f066df7a3babf55efab4b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b891606752067a1b21e26f3f62c11c07ac6c918a00f066df7a3babf55efab4b3", kill_on_drop: false }`
[INFO] [stdout] b891606752067a1b21e26f3f62c11c07ac6c918a00f066df7a3babf55efab4b3
