[INFO] fetching crate rocket-mongo-file-center-download-response 0.6.3...
[INFO] checking rocket-mongo-file-center-download-response-0.6.3 against 1.55.0 for beta-1.56-3
[INFO] extracting crate rocket-mongo-file-center-download-response 0.6.3 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate rocket-mongo-file-center-download-response 0.6.3 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 rocket-mongo-file-center-download-response 0.6.3
[INFO] finished tweaking crates.io crate rocket-mongo-file-center-download-response 0.6.3
[INFO] tweaked toml for crates.io crate rocket-mongo-file-center-download-response 0.6.3 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate crates.io crate rocket-mongo-file-center-download-response 0.6.3 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] [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-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] c3f6d00468c3ee5df211dca76ef2fd0b10b9fbba21c961d124f164be32c878c4
[INFO] running `Command { std: "docker" "start" "-a" "c3f6d00468c3ee5df211dca76ef2fd0b10b9fbba21c961d124f164be32c878c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3f6d00468c3ee5df211dca76ef2fd0b10b9fbba21c961d124f164be32c878c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3f6d00468c3ee5df211dca76ef2fd0b10b9fbba21c961d124f164be32c878c4", kill_on_drop: false }`
[INFO] [stdout] c3f6d00468c3ee5df211dca76ef2fd0b10b9fbba21c961d124f164be32c878c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c98adfebd11a805723eaa960b29ae190c8217dfaa39cd8a39d8cd72ed1ae7144
[INFO] running `Command { std: "docker" "start" "-a" "c98adfebd11a805723eaa960b29ae190c8217dfaa39cd8a39d8cd72ed1ae7144", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]    Compiling subtle v2.2.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling tinyvec v0.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling zeroize v1.1.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking debug-helper v0.3.10
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]    Compiling smallvec v1.4.1
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking data-encoding v2.2.1
[INFO] [stderr]     Checking separator v0.4.1
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr] error: could not compile `proc-macro2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-1.0.19/build.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="proc-macro"' -C metadata=56cd42eacc789c96 -C extra-filename=-56cd42eacc789c96 --out-dir /opt/rustwide/target/debug/build/proc-macro2-56cd42eacc789c96 -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --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" "c98adfebd11a805723eaa960b29ae190c8217dfaa39cd8a39d8cd72ed1ae7144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c98adfebd11a805723eaa960b29ae190c8217dfaa39cd8a39d8cd72ed1ae7144", kill_on_drop: false }`
[INFO] [stdout] c98adfebd11a805723eaa960b29ae190c8217dfaa39cd8a39d8cd72ed1ae7144
