[INFO] cloning repository https://github.com/Cozy03/palindrome_checker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Cozy03/palindrome_checker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCozy03%2Fpalindrome_checker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCozy03%2Fpalindrome_checker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cbd7bfd25483de6d37d7264ca6492d98e11d995c
[INFO] testing Cozy03/palindrome_checker against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCozy03%2Fpalindrome_checker" "/workspace/builds/worker-56/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-56/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Cozy03/palindrome_checker on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Cozy03/palindrome_checker
[INFO] finished tweaking git repo https://github.com/Cozy03/palindrome_checker
[INFO] tweaked toml for git repo https://github.com/Cozy03/palindrome_checker written to /workspace/builds/worker-56/source/Cargo.toml
[INFO] crate git repo https://github.com/Cozy03/palindrome_checker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60051f90b4e387d1c084c06c10025e82251b58ce63ab5b64fce375bdec8565fb
[INFO] running `Command { std: "docker" "start" "-a" "60051f90b4e387d1c084c06c10025e82251b58ce63ab5b64fce375bdec8565fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60051f90b4e387d1c084c06c10025e82251b58ce63ab5b64fce375bdec8565fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60051f90b4e387d1c084c06c10025e82251b58ce63ab5b64fce375bdec8565fb", kill_on_drop: false }`
[INFO] [stdout] 60051f90b4e387d1c084c06c10025e82251b58ce63ab5b64fce375bdec8565fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b7225284e98db1028eae53c5721305c00d080f1dfadd0f21181762d4b9ef714
[INFO] running `Command { std: "docker" "start" "-a" "3b7225284e98db1028eae53c5721305c00d080f1dfadd0f21181762d4b9ef714", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling palindrome_checker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.06s
[INFO] running `Command { std: "docker" "inspect" "3b7225284e98db1028eae53c5721305c00d080f1dfadd0f21181762d4b9ef714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b7225284e98db1028eae53c5721305c00d080f1dfadd0f21181762d4b9ef714", kill_on_drop: false }`
[INFO] [stdout] 3b7225284e98db1028eae53c5721305c00d080f1dfadd0f21181762d4b9ef714
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 035c7038bd6ce526573cec9d4e9a3612f42d553b3c3029aab24f448381bd815e
[INFO] running `Command { std: "docker" "start" "-a" "035c7038bd6ce526573cec9d4e9a3612f42d553b3c3029aab24f448381bd815e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling palindrome_checker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "035c7038bd6ce526573cec9d4e9a3612f42d553b3c3029aab24f448381bd815e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "035c7038bd6ce526573cec9d4e9a3612f42d553b3c3029aab24f448381bd815e", kill_on_drop: false }`
[INFO] [stdout] 035c7038bd6ce526573cec9d4e9a3612f42d553b3c3029aab24f448381bd815e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3151778d5dfbc4f78b7a4b35c403c1d24fdbf06d38b84bd29c603c42b6574adc
[INFO] running `Command { std: "docker" "start" "-a" "3151778d5dfbc4f78b7a4b35c403c1d24fdbf06d38b84bd29c603c42b6574adc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.48s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/palindrome_checker-b215ea51f658fb49)
[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" "3151778d5dfbc4f78b7a4b35c403c1d24fdbf06d38b84bd29c603c42b6574adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3151778d5dfbc4f78b7a4b35c403c1d24fdbf06d38b84bd29c603c42b6574adc", kill_on_drop: false }`
[INFO] [stdout] 3151778d5dfbc4f78b7a4b35c403c1d24fdbf06d38b84bd29c603c42b6574adc