[INFO] fetching crate inspirer 0.1.1...
[INFO] testing inspirer-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate inspirer 0.1.1 into /workspace/builds/worker-41/source
[INFO] validating manifest of crates.io crate inspirer 0.1.1 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 inspirer 0.1.1
[INFO] finished tweaking crates.io crate inspirer 0.1.1
[INFO] tweaked toml for crates.io crate inspirer 0.1.1 written to /workspace/builds/worker-41/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded reqwest v0.5.2
[INFO] [stderr]   Downloaded slog-stream v1.2.1
[INFO] [stderr]   Downloaded serde_urlencoded v0.4.3
[INFO] [stderr]   Downloaded slog-stdlog v1.1.0
[INFO] [stderr]   Downloaded slog-extra v0.1.2
[INFO] [stderr]   Downloaded slog-term v1.5.0
[INFO] [stderr]   Downloaded slog v1.7.1
[INFO] [stderr]   Downloaded libinspire v0.1.0
[INFO] [stderr]   Downloaded libads v0.1.0-beta
[INFO] [stderr]   Downloaded nom-bibtex v0.2.0
[INFO] [stderr]   Downloaded select v0.3.0
[INFO] [stderr]   Downloaded nom v3.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 67e2e1cbc79bc3650f1ff1324a7ed426269ca57e0aa0f9d22cec9a5fc6016e9e
[INFO] running `Command { std: "docker" "start" "-a" "67e2e1cbc79bc3650f1ff1324a7ed426269ca57e0aa0f9d22cec9a5fc6016e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67e2e1cbc79bc3650f1ff1324a7ed426269ca57e0aa0f9d22cec9a5fc6016e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67e2e1cbc79bc3650f1ff1324a7ed426269ca57e0aa0f9d22cec9a5fc6016e9e", kill_on_drop: false }`
[INFO] [stdout] 67e2e1cbc79bc3650f1ff1324a7ed426269ca57e0aa0f9d22cec9a5fc6016e9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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] 83214a2655c5d660a585cb51d767b50f993cbeff376f21190d36ae3b0b56a7b7
[INFO] running `Command { std: "docker" "start" "-a" "83214a2655c5d660a585cb51d767b50f993cbeff376f21190d36ae3b0b56a7b7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.6
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling slog v1.7.1
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling time v0.3.2
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling serde v0.9.15
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling utf-8 v0.6.0
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling try_from v0.3.2
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling flate2 v1.0.21
[INFO] [stderr]    Compiling libflate v0.1.27
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr] error: could not compile `syn`
[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/syn-1.0.76/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="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=85e589a96437ca85 -C extra-filename=-85e589a96437ca85 --out-dir /opt/rustwide/target/debug/build/syn-85e589a96437ca85 -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" "83214a2655c5d660a585cb51d767b50f993cbeff376f21190d36ae3b0b56a7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83214a2655c5d660a585cb51d767b50f993cbeff376f21190d36ae3b0b56a7b7", kill_on_drop: false }`
[INFO] [stdout] 83214a2655c5d660a585cb51d767b50f993cbeff376f21190d36ae3b0b56a7b7