[INFO] cloning repository https://github.com/crystalynliu/rust-example-tcp-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crystalynliu/rust-example-tcp-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrystalynliu%2Frust-example-tcp-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrystalynliu%2Frust-example-tcp-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5622dcfbb594a93eec39f4355c27cd39a136208d
[INFO] testing crystalynliu/rust-example-tcp-server against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrystalynliu%2Frust-example-tcp-server" "/workspace/builds/worker-31/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-31/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crystalynliu/rust-example-tcp-server 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/crystalynliu/rust-example-tcp-server
[INFO] finished tweaking git repo https://github.com/crystalynliu/rust-example-tcp-server
[INFO] tweaked toml for git repo https://github.com/crystalynliu/rust-example-tcp-server written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate git repo https://github.com/crystalynliu/rust-example-tcp-server 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 2f5b93f0fb934fe96f9dad8a3236c732cd377d9efffa14b564fa6e1647474ec5
[INFO] running `Command { std: "docker" "start" "-a" "2f5b93f0fb934fe96f9dad8a3236c732cd377d9efffa14b564fa6e1647474ec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f5b93f0fb934fe96f9dad8a3236c732cd377d9efffa14b564fa6e1647474ec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f5b93f0fb934fe96f9dad8a3236c732cd377d9efffa14b564fa6e1647474ec5", kill_on_drop: false }`
[INFO] [stdout] 2f5b93f0fb934fe96f9dad8a3236c732cd377d9efffa14b564fa6e1647474ec5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] a756c7199fbeffd3c74fab7c48308ca31ca04a3e2a2b3259dcbe2def1218137a
[INFO] running `Command { std: "docker" "start" "-a" "a756c7199fbeffd3c74fab7c48308ca31ca04a3e2a2b3259dcbe2def1218137a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling tcp-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.80s
[INFO] running `Command { std: "docker" "inspect" "a756c7199fbeffd3c74fab7c48308ca31ca04a3e2a2b3259dcbe2def1218137a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a756c7199fbeffd3c74fab7c48308ca31ca04a3e2a2b3259dcbe2def1218137a", kill_on_drop: false }`
[INFO] [stdout] a756c7199fbeffd3c74fab7c48308ca31ca04a3e2a2b3259dcbe2def1218137a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 3bb0a1f358778363a9d51bcf4b7c40d1a3140759cd7452ba86c26fefaeb069c3
[INFO] running `Command { std: "docker" "start" "-a" "3bb0a1f358778363a9d51bcf4b7c40d1a3140759cd7452ba86c26fefaeb069c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling tcp-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "3bb0a1f358778363a9d51bcf4b7c40d1a3140759cd7452ba86c26fefaeb069c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bb0a1f358778363a9d51bcf4b7c40d1a3140759cd7452ba86c26fefaeb069c3", kill_on_drop: false }`
[INFO] [stdout] 3bb0a1f358778363a9d51bcf4b7c40d1a3140759cd7452ba86c26fefaeb069c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] d8e5f9afd69d9fd6da4926f7aeb7a6a15da6e7c821cca827671e77f7777b577e
[INFO] running `Command { std: "docker" "start" "-a" "d8e5f9afd69d9fd6da4926f7aeb7a6a15da6e7c821cca827671e77f7777b577e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tcp_server-4c14331ef9d10279)
[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" "d8e5f9afd69d9fd6da4926f7aeb7a6a15da6e7c821cca827671e77f7777b577e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8e5f9afd69d9fd6da4926f7aeb7a6a15da6e7c821cca827671e77f7777b577e", kill_on_drop: false }`
[INFO] [stdout] d8e5f9afd69d9fd6da4926f7aeb7a6a15da6e7c821cca827671e77f7777b577e