[INFO] fetching crate custom-print 0.1.0...
[INFO] testing custom-print-0.1.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate custom-print 0.1.0 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate custom-print 0.1.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate custom-print 0.1.0
[INFO] finished tweaking crates.io crate custom-print 0.1.0
[INFO] tweaked toml for crates.io crate custom-print 0.1.0 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db2ee84e49f54a8835d5a4eb147fed68823a2ad9eda4cbde30f9a0222b3774db
[INFO] running `Command { std: "docker" "start" "-a" "db2ee84e49f54a8835d5a4eb147fed68823a2ad9eda4cbde30f9a0222b3774db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db2ee84e49f54a8835d5a4eb147fed68823a2ad9eda4cbde30f9a0222b3774db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2ee84e49f54a8835d5a4eb147fed68823a2ad9eda4cbde30f9a0222b3774db", kill_on_drop: false }`
[INFO] [stdout] db2ee84e49f54a8835d5a4eb147fed68823a2ad9eda4cbde30f9a0222b3774db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67d684177239be0251e25e4e4b056441d246d1d9163e8c1303a98676d2bae7d5
[INFO] running `Command { std: "docker" "start" "-a" "67d684177239be0251e25e4e4b056441d246d1d9163e8c1303a98676d2bae7d5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling custom-print v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "67d684177239be0251e25e4e4b056441d246d1d9163e8c1303a98676d2bae7d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67d684177239be0251e25e4e4b056441d246d1d9163e8c1303a98676d2bae7d5", kill_on_drop: false }`
[INFO] [stdout] 67d684177239be0251e25e4e4b056441d246d1d9163e8c1303a98676d2bae7d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9147465f00637959731397ac167787552b35fb852e42d4904077b8ebab8afd4
[INFO] running `Command { std: "docker" "start" "-a" "a9147465f00637959731397ac167787552b35fb852e42d4904077b8ebab8afd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling codemap v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling semver-parser v0.9.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling codemap-diagnostic v0.1.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling readme-sync v0.2.0
[INFO] [stderr]    Compiling version-sync v0.9.2
[INFO] [stderr]    Compiling custom-print v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `custom-print`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name readme --edition=2018 tests/readme.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=7c4eb5697d0d9451 -C extra-filename=-7c4eb5697d0d9451 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern custom_print=/opt/rustwide/target/debug/deps/libcustom_print-74e0499f83b4fea7.rlib --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-a76c90beb999d50a.rlib --extern readme_sync=/opt/rustwide/target/debug/deps/libreadme_sync-b5a926376e1b0507.rlib --extern version_sync=/opt/rustwide/target/debug/deps/libversion_sync-4b63dcb4f2d093c8.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" "a9147465f00637959731397ac167787552b35fb852e42d4904077b8ebab8afd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9147465f00637959731397ac167787552b35fb852e42d4904077b8ebab8afd4", kill_on_drop: false }`
[INFO] [stdout] a9147465f00637959731397ac167787552b35fb852e42d4904077b8ebab8afd4