[INFO] cloning repository https://github.com/zhaoxu1943/rust_concentration
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhaoxu1943/rust_concentration" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhaoxu1943%2Frust_concentration", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhaoxu1943%2Frust_concentration'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ba040341979c32cf9f59bef7b3c1e2f56dfe81d
[INFO] testing zhaoxu1943/rust_concentration against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhaoxu1943%2Frust_concentration" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhaoxu1943/rust_concentration 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/zhaoxu1943/rust_concentration
[INFO] finished tweaking git repo https://github.com/zhaoxu1943/rust_concentration
[INFO] tweaked toml for git repo https://github.com/zhaoxu1943/rust_concentration written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/zhaoxu1943/rust_concentration 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 4368a25653486667c6ba0c03d29a48547eaed25a5f16dd3dcf17078140d119e9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4368a25653486667c6ba0c03d29a48547eaed25a5f16dd3dcf17078140d119e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4368a25653486667c6ba0c03d29a48547eaed25a5f16dd3dcf17078140d119e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4368a25653486667c6ba0c03d29a48547eaed25a5f16dd3dcf17078140d119e9", kill_on_drop: false }`
[INFO] [stdout] 4368a25653486667c6ba0c03d29a48547eaed25a5f16dd3dcf17078140d119e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ef29051d9cd820f36b4c5c9725918243ebd8a7a339357b1ed9d82b47a1e700f4
[INFO] running `Command { std: "docker" "start" "-a" "ef29051d9cd820f36b4c5c9725918243ebd8a7a339357b1ed9d82b47a1e700f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_concentration v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "ef29051d9cd820f36b4c5c9725918243ebd8a7a339357b1ed9d82b47a1e700f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef29051d9cd820f36b4c5c9725918243ebd8a7a339357b1ed9d82b47a1e700f4", kill_on_drop: false }`
[INFO] [stdout] ef29051d9cd820f36b4c5c9725918243ebd8a7a339357b1ed9d82b47a1e700f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 3a943ad48f4a8269b14ab75fcd3dde1dd398ca81f48a781fa6c92c768c38f7e9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3a943ad48f4a8269b14ab75fcd3dde1dd398ca81f48a781fa6c92c768c38f7e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_concentration v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "3a943ad48f4a8269b14ab75fcd3dde1dd398ca81f48a781fa6c92c768c38f7e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a943ad48f4a8269b14ab75fcd3dde1dd398ca81f48a781fa6c92c768c38f7e9", kill_on_drop: false }`
[INFO] [stdout] 3a943ad48f4a8269b14ab75fcd3dde1dd398ca81f48a781fa6c92c768c38f7e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6283b5f40fc7c0e3092f8fddba00cf828e5a82a9f1799af49083f1dd96435211
[INFO] running `Command { std: "docker" "start" "-a" "6283b5f40fc7c0e3092f8fddba00cf828e5a82a9f1799af49083f1dd96435211", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_concentration-62f957e398154fed)
[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" "6283b5f40fc7c0e3092f8fddba00cf828e5a82a9f1799af49083f1dd96435211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6283b5f40fc7c0e3092f8fddba00cf828e5a82a9f1799af49083f1dd96435211", kill_on_drop: false }`
[INFO] [stdout] 6283b5f40fc7c0e3092f8fddba00cf828e5a82a9f1799af49083f1dd96435211