[INFO] cloning repository https://github.com/Mureke/rust-testing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mureke/rust-testing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMureke%2Frust-testing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMureke%2Frust-testing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 110dce6a25a1250be08b84b58c081048c6545a1e
[INFO] testing Mureke/rust-testing against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMureke%2Frust-testing" "/workspace/builds/worker-111/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-111/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Mureke/rust-testing on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Mureke/rust-testing
[INFO] finished tweaking git repo https://github.com/Mureke/rust-testing
[INFO] tweaked toml for git repo https://github.com/Mureke/rust-testing written to /workspace/builds/worker-111/source/Cargo.toml
[INFO] crate git repo https://github.com/Mureke/rust-testing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1b209b42edaddad1cba3441f73c089fb6d53f21c3a6706564535021af326115
[INFO] running `Command { std: "docker" "start" "-a" "e1b209b42edaddad1cba3441f73c089fb6d53f21c3a6706564535021af326115", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1b209b42edaddad1cba3441f73c089fb6d53f21c3a6706564535021af326115", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1b209b42edaddad1cba3441f73c089fb6d53f21c3a6706564535021af326115", kill_on_drop: false }`
[INFO] [stdout] e1b209b42edaddad1cba3441f73c089fb6d53f21c3a6706564535021af326115
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abebd972f84ab81309f15c2695c782f2ff0f4e7c805599fd3d5386eda40fab9b
[INFO] running `Command { std: "docker" "start" "-a" "abebd972f84ab81309f15c2695c782f2ff0f4e7c805599fd3d5386eda40fab9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_testit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::u8`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::u8;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest`
[INFO] [stdout]  --> src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn largest<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.54s
[INFO] running `Command { std: "docker" "inspect" "abebd972f84ab81309f15c2695c782f2ff0f4e7c805599fd3d5386eda40fab9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abebd972f84ab81309f15c2695c782f2ff0f4e7c805599fd3d5386eda40fab9b", kill_on_drop: false }`
[INFO] [stdout] abebd972f84ab81309f15c2695c782f2ff0f4e7c805599fd3d5386eda40fab9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9896bbbc435bded8e9566fe95b555ca989972ab30cec6ce56db45d3dec04ccd8
[INFO] running `Command { std: "docker" "start" "-a" "9896bbbc435bded8e9566fe95b555ca989972ab30cec6ce56db45d3dec04ccd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_testit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::u8`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::u8;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `largest`
[INFO] [stdout]  --> src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn largest<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "9896bbbc435bded8e9566fe95b555ca989972ab30cec6ce56db45d3dec04ccd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9896bbbc435bded8e9566fe95b555ca989972ab30cec6ce56db45d3dec04ccd8", kill_on_drop: false }`
[INFO] [stdout] 9896bbbc435bded8e9566fe95b555ca989972ab30cec6ce56db45d3dec04ccd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b868cd25637f17b9896548bf585a45a43b093253b093aecf52ea946fbeea5df2
[INFO] running `Command { std: "docker" "start" "-a" "b868cd25637f17b9896548bf585a45a43b093253b093aecf52ea946fbeea5df2", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::u8`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::u8;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `largest`
[INFO] [stderr]  --> src/main.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn largest<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_testit` (bin "rust_testit" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_testit-93f2ca1de9ed5d63)
[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] running `Command { std: "docker" "inspect" "b868cd25637f17b9896548bf585a45a43b093253b093aecf52ea946fbeea5df2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b868cd25637f17b9896548bf585a45a43b093253b093aecf52ea946fbeea5df2", kill_on_drop: false }`
[INFO] [stdout] b868cd25637f17b9896548bf585a45a43b093253b093aecf52ea946fbeea5df2