[INFO] cloning repository https://github.com/Cheng0Xin/rust-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Cheng0Xin/rust-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCheng0Xin%2Frust-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCheng0Xin%2Frust-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41537e719bca9ae954e29362f01aac45d1a267ab
[INFO] testing Cheng0Xin/rust-sample against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCheng0Xin%2Frust-sample" "/workspace/builds/worker-62/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-62/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Cheng0Xin/rust-sample on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Cheng0Xin/rust-sample
[INFO] finished tweaking git repo https://github.com/Cheng0Xin/rust-sample
[INFO] tweaked toml for git repo https://github.com/Cheng0Xin/rust-sample written to /workspace/builds/worker-62/source/Cargo.toml
[INFO] crate git repo https://github.com/Cheng0Xin/rust-sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c82a0a8bb2bc51d7a9ff7bfa40bdaa81e368a8ebb4c3eabfd2a0e0551731df42
[INFO] running `Command { std: "docker" "start" "-a" "c82a0a8bb2bc51d7a9ff7bfa40bdaa81e368a8ebb4c3eabfd2a0e0551731df42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c82a0a8bb2bc51d7a9ff7bfa40bdaa81e368a8ebb4c3eabfd2a0e0551731df42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c82a0a8bb2bc51d7a9ff7bfa40bdaa81e368a8ebb4c3eabfd2a0e0551731df42", kill_on_drop: false }`
[INFO] [stdout] c82a0a8bb2bc51d7a9ff7bfa40bdaa81e368a8ebb4c3eabfd2a0e0551731df42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34a3a5f22639aefa14a7f79608e654da5d686844f20bff289559dc8166ee13a5
[INFO] running `Command { std: "docker" "start" "-a" "34a3a5f22639aefa14a7f79608e654da5d686844f20bff289559dc8166ee13a5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.39s
[INFO] running `Command { std: "docker" "inspect" "34a3a5f22639aefa14a7f79608e654da5d686844f20bff289559dc8166ee13a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34a3a5f22639aefa14a7f79608e654da5d686844f20bff289559dc8166ee13a5", kill_on_drop: false }`
[INFO] [stdout] 34a3a5f22639aefa14a7f79608e654da5d686844f20bff289559dc8166ee13a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13e864c3f32d3297bf58dfbf542608c163b073920a801f2c206d79f541ba6861
[INFO] running `Command { std: "docker" "start" "-a" "13e864c3f32d3297bf58dfbf542608c163b073920a801f2c206d79f541ba6861", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "13e864c3f32d3297bf58dfbf542608c163b073920a801f2c206d79f541ba6861", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13e864c3f32d3297bf58dfbf542608c163b073920a801f2c206d79f541ba6861", kill_on_drop: false }`
[INFO] [stdout] 13e864c3f32d3297bf58dfbf542608c163b073920a801f2c206d79f541ba6861
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 43bbdb0565d85744702a8bd633b8749178d410ce80d2a1b12a9994ed1b787f40
[INFO] running `Command { std: "docker" "start" "-a" "43bbdb0565d85744702a8bd633b8749178d410ce80d2a1b12a9994ed1b787f40", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn-9fe7d468dd13ba1d)
[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" "43bbdb0565d85744702a8bd633b8749178d410ce80d2a1b12a9994ed1b787f40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43bbdb0565d85744702a8bd633b8749178d410ce80d2a1b12a9994ed1b787f40", kill_on_drop: false }`
[INFO] [stdout] 43bbdb0565d85744702a8bd633b8749178d410ce80d2a1b12a9994ed1b787f40