[INFO] fetching crate espmonitor 0.4.0...
[INFO] testing espmonitor-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate espmonitor 0.4.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate espmonitor 0.4.0 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 espmonitor 0.4.0
[INFO] finished tweaking crates.io crate espmonitor 0.4.0
[INFO] tweaked toml for crates.io crate espmonitor 0.4.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate espmonitor 0.4.0 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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] d48b7cedc31254d53eb972697a9222084a0d1a6bbb1661c72d371441e24bcbfc
[INFO] running `Command { std: "docker" "start" "-a" "d48b7cedc31254d53eb972697a9222084a0d1a6bbb1661c72d371441e24bcbfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d48b7cedc31254d53eb972697a9222084a0d1a6bbb1661c72d371441e24bcbfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d48b7cedc31254d53eb972697a9222084a0d1a6bbb1661c72d371441e24bcbfc", kill_on_drop: false }`
[INFO] [stdout] d48b7cedc31254d53eb972697a9222084a0d1a6bbb1661c72d371441e24bcbfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] a87c8fe0798d8ecfd50e1e8040fc94c2f16d65f8a821548ce86714417e48e0f3
[INFO] running `Command { std: "docker" "start" "-a" "a87c8fe0798d8ecfd50e1e8040fc94c2f16d65f8a821548ce86714417e48e0f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling nix v0.22.1
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling serialport v4.0.1
[INFO] [stderr]    Compiling mio-serial v5.0.1
[INFO] [stderr]    Compiling espmonitor v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.99s
[INFO] running `Command { std: "docker" "inspect" "a87c8fe0798d8ecfd50e1e8040fc94c2f16d65f8a821548ce86714417e48e0f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a87c8fe0798d8ecfd50e1e8040fc94c2f16d65f8a821548ce86714417e48e0f3", kill_on_drop: false }`
[INFO] [stdout] a87c8fe0798d8ecfd50e1e8040fc94c2f16d65f8a821548ce86714417e48e0f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 572d20b60d5c74e76fa962be6c4c0d3ea4b0626be356d3a323e04ac430f5c344
[INFO] running `Command { std: "docker" "start" "-a" "572d20b60d5c74e76fa962be6c4c0d3ea4b0626be356d3a323e04ac430f5c344", kill_on_drop: false }`
[INFO] [stderr]    Compiling espmonitor v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "572d20b60d5c74e76fa962be6c4c0d3ea4b0626be356d3a323e04ac430f5c344", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "572d20b60d5c74e76fa962be6c4c0d3ea4b0626be356d3a323e04ac430f5c344", kill_on_drop: false }`
[INFO] [stdout] 572d20b60d5c74e76fa962be6c4c0d3ea4b0626be356d3a323e04ac430f5c344
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 7080095e7a439907a1ffd42486f89826f332e4904d4776edc147578976fd1764
[INFO] running `Command { std: "docker" "start" "-a" "7080095e7a439907a1ffd42486f89826f332e4904d4776edc147578976fd1764", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/espmonitor-1cf2f33a38da0d93)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/espmonitor-e3ba0a29b6322faa)
[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] [stderr]    Doc-tests espmonitor
[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] [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" "7080095e7a439907a1ffd42486f89826f332e4904d4776edc147578976fd1764", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7080095e7a439907a1ffd42486f89826f332e4904d4776edc147578976fd1764", kill_on_drop: false }`
[INFO] [stdout] 7080095e7a439907a1ffd42486f89826f332e4904d4776edc147578976fd1764