[INFO] fetching crate bridges 0.5.0...
[INFO] testing bridges-0.5.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate bridges 0.5.0 into /workspace/builds/worker-25/source
[INFO] validating manifest of crates.io crate bridges 0.5.0 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 crates.io crate bridges 0.5.0
[INFO] finished tweaking crates.io crate bridges 0.5.0
[INFO] tweaked toml for crates.io crate bridges 0.5.0 written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] crate crates.io crate bridges 0.5.0 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-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] 73f9c43faaac462f542bed4fe1d6623cd78869b2319d4770c634072867735607
[INFO] running `Command { std: "docker" "start" "-a" "73f9c43faaac462f542bed4fe1d6623cd78869b2319d4770c634072867735607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73f9c43faaac462f542bed4fe1d6623cd78869b2319d4770c634072867735607", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73f9c43faaac462f542bed4fe1d6623cd78869b2319d4770c634072867735607", kill_on_drop: false }`
[INFO] [stdout] 73f9c43faaac462f542bed4fe1d6623cd78869b2319d4770c634072867735607
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] cdbb78f099dd4b31c6c5c187d3cf9b3b1a059bf79e9d2cafd0967efe961d1c14
[INFO] running `Command { std: "docker" "start" "-a" "cdbb78f099dd4b31c6c5c187d3cf9b3b1a059bf79e9d2cafd0967efe961d1c14", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling pkg-config v0.3.15
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling nix v0.12.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling libudev v0.2.0
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling serialport v3.2.0
[INFO] [stderr]    Compiling mio-serial v3.2.14
[INFO] [stderr]    Compiling bridges v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.49s
[INFO] running `Command { std: "docker" "inspect" "cdbb78f099dd4b31c6c5c187d3cf9b3b1a059bf79e9d2cafd0967efe961d1c14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdbb78f099dd4b31c6c5c187d3cf9b3b1a059bf79e9d2cafd0967efe961d1c14", kill_on_drop: false }`
[INFO] [stdout] cdbb78f099dd4b31c6c5c187d3cf9b3b1a059bf79e9d2cafd0967efe961d1c14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] c3d1fe74b98b0d73017521c02627ce49932ddc671f71b5e07bf6e4ac1c4a4b28
[INFO] running `Command { std: "docker" "start" "-a" "c3d1fe74b98b0d73017521c02627ce49932ddc671f71b5e07bf6e4ac1c4a4b28", kill_on_drop: false }`
[INFO] [stderr]    Compiling bridges v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "c3d1fe74b98b0d73017521c02627ce49932ddc671f71b5e07bf6e4ac1c4a4b28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3d1fe74b98b0d73017521c02627ce49932ddc671f71b5e07bf6e4ac1c4a4b28", kill_on_drop: false }`
[INFO] [stdout] c3d1fe74b98b0d73017521c02627ce49932ddc671f71b5e07bf6e4ac1c4a4b28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] dd0704786770d4997910379c13b793a67651e80f97cbb782ab3040cc754ad050
[INFO] running `Command { std: "docker" "start" "-a" "dd0704786770d4997910379c13b793a67651e80f97cbb782ab3040cc754ad050", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bridges-126844f210a7cd70)
[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" "dd0704786770d4997910379c13b793a67651e80f97cbb782ab3040cc754ad050", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd0704786770d4997910379c13b793a67651e80f97cbb782ab3040cc754ad050", kill_on_drop: false }`
[INFO] [stdout] dd0704786770d4997910379c13b793a67651e80f97cbb782ab3040cc754ad050