[INFO] fetching crate mdbook-open-on-gh 2.0.1...
[INFO] checking mdbook-open-on-gh-2.0.1 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate mdbook-open-on-gh 2.0.1 into /workspace/builds/worker-78/source
[INFO] validating manifest of crates.io crate mdbook-open-on-gh 2.0.1 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-open-on-gh 2.0.1
[INFO] finished tweaking crates.io crate mdbook-open-on-gh 2.0.1
[INFO] tweaked toml for crates.io crate mdbook-open-on-gh 2.0.1 written to /workspace/builds/worker-78/source/Cargo.toml
[INFO] crate crates.io crate mdbook-open-on-gh 2.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5edb9acebd9ad305eb65fdffc45415f102afd3138ce535996dfca4e48394202
[INFO] running `Command { std: "docker" "start" "-a" "a5edb9acebd9ad305eb65fdffc45415f102afd3138ce535996dfca4e48394202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5edb9acebd9ad305eb65fdffc45415f102afd3138ce535996dfca4e48394202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5edb9acebd9ad305eb65fdffc45415f102afd3138ce535996dfca4e48394202", kill_on_drop: false }`
[INFO] [stdout] a5edb9acebd9ad305eb65fdffc45415f102afd3138ce535996dfca4e48394202
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36a459efd609e98da1e3a46e5f1e29a9ae716ddf6e311743407c63d6a886efec
[INFO] running `Command { std: "docker" "start" "-a" "36a459efd609e98da1e3a46e5f1e29a9ae716ddf6e311743407c63d6a886efec", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling pin-project-internal v0.4.24
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking pin-project-lite v0.1.8
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking hashbrown v0.9.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strum v0.18.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking urlencoding v1.1.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking shlex v1.0.0
[INFO] [stderr]     Checking open v1.4.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking tracing-core v0.1.16
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr] error: could not compile `tracing-core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name tracing_core --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tracing-core-0.1.16/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="lazy_static"' --cfg 'feature="std"' -C metadata=66345a16cfc8e712 -C extra-filename=-66345a16cfc8e712 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-3ab14ef94a1f89cf.rmeta --cap-lints allow --cap-lints=forbid` (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" "36a459efd609e98da1e3a46e5f1e29a9ae716ddf6e311743407c63d6a886efec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36a459efd609e98da1e3a46e5f1e29a9ae716ddf6e311743407c63d6a886efec", kill_on_drop: false }`
[INFO] [stdout] 36a459efd609e98da1e3a46e5f1e29a9ae716ddf6e311743407c63d6a886efec