[INFO] crate rust_hawktracer 0.3.1 is already in cache
[INFO] extracting crate rust_hawktracer 0.3.1 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/rust_hawktracer/0.3.1
[INFO] extracting crate rust_hawktracer 0.3.1 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/rust_hawktracer/0.3.1
[INFO] validating manifest of rust_hawktracer-0.3.1 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rust_hawktracer-0.3.1 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rust_hawktracer-0.3.1
[INFO] finished frobbing rust_hawktracer-0.3.1
[INFO] frobbed toml for rust_hawktracer-0.3.1 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/rust_hawktracer/0.3.1/Cargo.toml
[INFO] started frobbing rust_hawktracer-0.3.1
[INFO] finished frobbing rust_hawktracer-0.3.1
[INFO] frobbed toml for rust_hawktracer-0.3.1 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/rust_hawktracer/0.3.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] building rust_hawktracer-0.3.1 against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-5/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/rust_hawktracer/0.3.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] b51b9087ce27742d6f6b79e48f8f9cef70c5fc0579ab8a225eb5ba21e8d29e38
[INFO] running `"docker" "start" "-a" "b51b9087ce27742d6f6b79e48f8f9cef70c5fc0579ab8a225eb5ba21e8d29e38"`
[INFO] [stderr]    Compiling rust_hawktracer v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Path`
[INFO] [stderr]  --> build.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::path::{PathBuf, Path};
[INFO] [stderr]   |                          ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.27s
[INFO] running `"docker" "inspect" "b51b9087ce27742d6f6b79e48f8f9cef70c5fc0579ab8a225eb5ba21e8d29e38"`
[INFO] running `"docker" "rm" "-f" "b51b9087ce27742d6f6b79e48f8f9cef70c5fc0579ab8a225eb5ba21e8d29e38"`
[INFO] [stdout] b51b9087ce27742d6f6b79e48f8f9cef70c5fc0579ab8a225eb5ba21e8d29e38
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-5/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/rust_hawktracer/0.3.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4fb7b3f5f52b6f6e627bc0cf9fb8e5ec39f4b8c0b4e5d62d186499f5226deef8
[INFO] running `"docker" "start" "-a" "4fb7b3f5f52b6f6e627bc0cf9fb8e5ec39f4b8c0b4e5d62d186499f5226deef8"`
[INFO] [stderr]    Compiling rust_hawktracer v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/file_listener_tests.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fs::remove_file(file_name);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/simple_test.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fs::remove_file(file_name);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.36s
[INFO] running `"docker" "inspect" "4fb7b3f5f52b6f6e627bc0cf9fb8e5ec39f4b8c0b4e5d62d186499f5226deef8"`
[INFO] running `"docker" "rm" "-f" "4fb7b3f5f52b6f6e627bc0cf9fb8e5ec39f4b8c0b4e5d62d186499f5226deef8"`
[INFO] [stdout] 4fb7b3f5f52b6f6e627bc0cf9fb8e5ec39f4b8c0b4e5d62d186499f5226deef8