[INFO] cloning repository https://github.com/takenta/rustracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/takenta/rustracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakenta%2Frustracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakenta%2Frustracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f5097114c2aceefd1298a80568e1afa19319e06
[INFO] testing takenta/rustracer against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakenta%2Frustracer" "/workspace/builds/worker-55/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-55/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/takenta/rustracer on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/takenta/rustracer
[INFO] finished tweaking git repo https://github.com/takenta/rustracer
[INFO] tweaked toml for git repo https://github.com/takenta/rustracer written to /workspace/builds/worker-55/source/Cargo.toml
[INFO] crate git repo https://github.com/takenta/rustracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3aec388472136f8c0a193467a48a3c406a8c34bef4ec42f7d3f94b19495ebf1
[INFO] running `Command { std: "docker" "start" "-a" "f3aec388472136f8c0a193467a48a3c406a8c34bef4ec42f7d3f94b19495ebf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3aec388472136f8c0a193467a48a3c406a8c34bef4ec42f7d3f94b19495ebf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3aec388472136f8c0a193467a48a3c406a8c34bef4ec42f7d3f94b19495ebf1", kill_on_drop: false }`
[INFO] [stdout] f3aec388472136f8c0a193467a48a3c406a8c34bef4ec42f7d3f94b19495ebf1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c4c60794b532c170ef4012d82840304b72877b9c724266b4f7db28f5f8fe0c5
[INFO] running `Command { std: "docker" "start" "-a" "4c4c60794b532c170ef4012d82840304b72877b9c724266b4f7db28f5f8fe0c5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling regex v0.2.5
[INFO] [stderr]    Compiling rustracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/main.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let cmd = Command::new("strace")
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.70s
[INFO] running `Command { std: "docker" "inspect" "4c4c60794b532c170ef4012d82840304b72877b9c724266b4f7db28f5f8fe0c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c4c60794b532c170ef4012d82840304b72877b9c724266b4f7db28f5f8fe0c5", kill_on_drop: false }`
[INFO] [stdout] 4c4c60794b532c170ef4012d82840304b72877b9c724266b4f7db28f5f8fe0c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53ef5efc3009875c547b2c4cac14cfa3deab16d99503644a9cebb591e7e21ccb
[INFO] running `Command { std: "docker" "start" "-a" "53ef5efc3009875c547b2c4cac14cfa3deab16d99503644a9cebb591e7e21ccb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rustracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `cmd`
[INFO] [stdout]   --> src/main.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let cmd = Command::new("strace")
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "53ef5efc3009875c547b2c4cac14cfa3deab16d99503644a9cebb591e7e21ccb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53ef5efc3009875c547b2c4cac14cfa3deab16d99503644a9cebb591e7e21ccb", kill_on_drop: false }`
[INFO] [stdout] 53ef5efc3009875c547b2c4cac14cfa3deab16d99503644a9cebb591e7e21ccb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 26044acc4a2c0437859ab5fb1cfc3510bbd3957ce90d38a1d4aed07501d0737c
[INFO] running `Command { std: "docker" "start" "-a" "26044acc4a2c0437859ab5fb1cfc3510bbd3957ce90d38a1d4aed07501d0737c", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `cmd`
[INFO] [stderr]   --> src/main.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |     let cmd = Command::new("strace")
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_cmd`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rustracer` (bin "rustracer" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustracer-8ec7353e7839ee86)
[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" "26044acc4a2c0437859ab5fb1cfc3510bbd3957ce90d38a1d4aed07501d0737c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26044acc4a2c0437859ab5fb1cfc3510bbd3957ce90d38a1d4aed07501d0737c", kill_on_drop: false }`
[INFO] [stdout] 26044acc4a2c0437859ab5fb1cfc3510bbd3957ce90d38a1d4aed07501d0737c