[INFO] fetching crate structopt 0.3.23...
[INFO] testing structopt-0.3.23 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate structopt 0.3.23 into /workspace/builds/worker-50/source
[INFO] validating manifest of crates.io crate structopt 0.3.23 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate structopt 0.3.23
[INFO] finished tweaking crates.io crate structopt 0.3.23
[INFO] tweaked toml for crates.io crate structopt 0.3.23 written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate crates.io crate structopt 0.3.23 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9faad2f9ce74c8c1290304321b908dfd0107c9b18157f3d658c7ec021076f7b
[INFO] running `Command { std: "docker" "start" "-a" "a9faad2f9ce74c8c1290304321b908dfd0107c9b18157f3d658c7ec021076f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9faad2f9ce74c8c1290304321b908dfd0107c9b18157f3d658c7ec021076f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9faad2f9ce74c8c1290304321b908dfd0107c9b18157f3d658c7ec021076f7b", kill_on_drop: false }`
[INFO] [stdout] a9faad2f9ce74c8c1290304321b908dfd0107c9b18157f3d658c7ec021076f7b
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6e61f88979733557afa63d77acffe6a9f403bee4c534efd640c10f040d3d0f2
[INFO] running `Command { std: "docker" "start" "-a" "e6e61f88979733557afa63d77acffe6a9f403bee4c534efd640c10f040d3d0f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling syn v1.0.61
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling structopt v0.3.23 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.19s
[INFO] running `Command { std: "docker" "inspect" "e6e61f88979733557afa63d77acffe6a9f403bee4c534efd640c10f040d3d0f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6e61f88979733557afa63d77acffe6a9f403bee4c534efd640c10f040d3d0f2", kill_on_drop: false }`
[INFO] [stdout] e6e61f88979733557afa63d77acffe6a9f403bee4c534efd640c10f040d3d0f2
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d5382be711fc9571a33050f1359dcf7487c64e750a0972bc9ac2dc1507dfb71
[INFO] running `Command { std: "docker" "start" "-a" "5d5382be711fc9571a33050f1359dcf7487c64e750a0972bc9ac2dc1507dfb71", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling trybuild v1.0.41
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]    Compiling dissimilar v1.0.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling structopt v0.3.23 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `structopt`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name default_value --edition=2018 tests/default_value.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' -C metadata=489e32a05b849e17 -C extra-filename=-489e32a05b849e17 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-4a9b913f655bff99.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-86422d76b8bd90ed.rlib --extern rustversion=/opt/rustwide/target/debug/deps/librustversion-0e3260863b6f5b0a.so --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-7f7f9c496e7c7995.rlib --extern structopt_derive=/opt/rustwide/target/debug/deps/libstructopt_derive-72598d78b6a4f9ba.so --extern strum=/opt/rustwide/target/debug/deps/libstrum-50b969e3d8285ff2.rlib --extern trybuild=/opt/rustwide/target/debug/deps/libtrybuild-41c1ddec37498cb5.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5d5382be711fc9571a33050f1359dcf7487c64e750a0972bc9ac2dc1507dfb71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d5382be711fc9571a33050f1359dcf7487c64e750a0972bc9ac2dc1507dfb71", kill_on_drop: false }`
[INFO] [stdout] 5d5382be711fc9571a33050f1359dcf7487c64e750a0972bc9ac2dc1507dfb71