[INFO] fetching crate describe_err 1.0.1...
[INFO] testing describe_err-1.0.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate describe_err 1.0.1 into /workspace/builds/worker-50/source
[INFO] validating manifest of crates.io crate describe_err 1.0.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate describe_err 1.0.1
[INFO] finished tweaking crates.io crate describe_err 1.0.1
[INFO] tweaked toml for crates.io crate describe_err 1.0.1 written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 676fe5b02da37bc5dfe43894ef2fcf53767e464de82a80de16eeab01be638ba7
[INFO] running `Command { std: "docker" "start" "-a" "676fe5b02da37bc5dfe43894ef2fcf53767e464de82a80de16eeab01be638ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "676fe5b02da37bc5dfe43894ef2fcf53767e464de82a80de16eeab01be638ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "676fe5b02da37bc5dfe43894ef2fcf53767e464de82a80de16eeab01be638ba7", kill_on_drop: false }`
[INFO] [stdout] 676fe5b02da37bc5dfe43894ef2fcf53767e464de82a80de16eeab01be638ba7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f60435f3c9e4f7e51f237fae08e27de8007a63aa0fa5776c125460755db3bdd0
[INFO] running `Command { std: "docker" "start" "-a" "f60435f3c9e4f7e51f237fae08e27de8007a63aa0fa5776c125460755db3bdd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling describe_err v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.35s
[INFO] running `Command { std: "docker" "inspect" "f60435f3c9e4f7e51f237fae08e27de8007a63aa0fa5776c125460755db3bdd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f60435f3c9e4f7e51f237fae08e27de8007a63aa0fa5776c125460755db3bdd0", kill_on_drop: false }`
[INFO] [stdout] f60435f3c9e4f7e51f237fae08e27de8007a63aa0fa5776c125460755db3bdd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02829c114192f5f2bd2a048e840411824243c15ead85b5afefafcc2dfb4a6dcf
[INFO] running `Command { std: "docker" "start" "-a" "02829c114192f5f2bd2a048e840411824243c15ead85b5afefafcc2dfb4a6dcf", kill_on_drop: false }`
[INFO] [stderr]    Compiling describe_err v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "02829c114192f5f2bd2a048e840411824243c15ead85b5afefafcc2dfb4a6dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02829c114192f5f2bd2a048e840411824243c15ead85b5afefafcc2dfb4a6dcf", kill_on_drop: false }`
[INFO] [stdout] 02829c114192f5f2bd2a048e840411824243c15ead85b5afefafcc2dfb4a6dcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d6ca833581403ed6fed42219947c4fbd1cb910467918313344dfdf385cc8c036
[INFO] running `Command { std: "docker" "start" "-a" "d6ca833581403ed6fed42219947c4fbd1cb910467918313344dfdf385cc8c036", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/describe_err-b98c4eec856dc7b2)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests describe_err
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::macro_err ... ok
[INFO] [stdout] test tests::simple_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - (line 7) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/lib.rs - describing (line 122) ... ok
[INFO] [stdout] test src/lib.rs - (line 38) ... ok
[INFO] [stdout] test src/lib.rs - describe (line 108) ... ok
[INFO] [stdout] test src/lib.rs - Described (line 67) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.48s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d6ca833581403ed6fed42219947c4fbd1cb910467918313344dfdf385cc8c036", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6ca833581403ed6fed42219947c4fbd1cb910467918313344dfdf385cc8c036", kill_on_drop: false }`
[INFO] [stdout] d6ca833581403ed6fed42219947c4fbd1cb910467918313344dfdf385cc8c036