[INFO] fetching crate mdbook-linkcheck 0.7.4...
[INFO] testing mdbook-linkcheck-0.7.4 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate mdbook-linkcheck 0.7.4 into /workspace/builds/worker-106/source
[INFO] validating manifest of crates.io crate mdbook-linkcheck 0.7.4 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-106/source/.cargo/config
[INFO] started tweaking crates.io crate mdbook-linkcheck 0.7.4
[INFO] finished tweaking crates.io crate mdbook-linkcheck 0.7.4
[INFO] tweaked toml for crates.io crate mdbook-linkcheck 0.7.4 written to /workspace/builds/worker-106/source/Cargo.toml
[INFO] crate crates.io crate mdbook-linkcheck 0.7.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded codespan v0.11.1
[INFO] [stderr]   Downloaded codespan-reporting v0.11.1
[INFO] [stderr]   Downloaded linkify v0.5.0
[INFO] [stderr]   Downloaded linkcheck v0.4.0
[INFO] [stderr]   Downloaded openssl-src v111.14.0+1.1.1j
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66df02ef66ee545b622cd677c238cf495876fbd26ed58aaf034c29b7f6d45a6e
[INFO] running `Command { std: "docker" "start" "-a" "66df02ef66ee545b622cd677c238cf495876fbd26ed58aaf034c29b7f6d45a6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66df02ef66ee545b622cd677c238cf495876fbd26ed58aaf034c29b7f6d45a6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66df02ef66ee545b622cd677c238cf495876fbd26ed58aaf034c29b7f6d45a6e", kill_on_drop: false }`
[INFO] [stdout] 66df02ef66ee545b622cd677c238cf495876fbd26ed58aaf034c29b7f6d45a6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b55ec561727b4ae5a81254228f9b9334163ad5aa45f44586005d08b491a6029c
[INFO] running `Command { std: "docker" "start" "-a" "b55ec561727b4ae5a81254228f9b9334163ad5aa45f44586005d08b491a6029c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling futures-core v0.3.13
[INFO] [stderr]    Compiling futures-sink v0.3.13
[INFO] [stderr]    Compiling futures-io v0.3.13
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling futures-task v0.3.13
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.63
[INFO] [stderr]    Compiling httpdate v0.3.2
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]    Compiling quick-error v2.0.0
[INFO] [stderr]    Compiling ipnet v2.3.0
[INFO] [stderr]    Compiling shlex v1.0.0
[INFO] [stderr]    Compiling open v1.4.0
[INFO] [stderr]    Compiling dunce v1.0.1
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling http v0.2.3
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling tinyvec v1.1.1
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling linkify v0.5.0
[INFO] [stderr]    Compiling tracing v0.1.25
[INFO] [stderr]    Compiling futures-channel v0.3.13
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.17
[INFO] [stderr]    Compiling idna v0.2.2
[INFO] [stderr]    Compiling openssl-src v111.14.0+1.1.1j
[INFO] [stderr]    Compiling http-body v0.4.0
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling mio v0.7.9
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling pin-project-internal v1.0.5
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr] error: could not compile `clap`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name clap /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.3/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="ansi_term"' --cfg 'feature="atty"' --cfg 'feature="color"' --cfg 'feature="default"' --cfg 'feature="strsim"' --cfg 'feature="suggestions"' --cfg 'feature="vec_map"' -C metadata=3c77715efe00d664 -C extra-filename=-3c77715efe00d664 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-ab5734da97e53ff9.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-08767bc38ea9832b.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-e09638bf9aca31b4.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-4659ff817c3bab94.rmeta --extern textwrap=/opt/rustwide/target/debug/deps/libtextwrap-8a32c8a8bd620f54.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-31fed32a2fe36ec3.rmeta --extern vec_map=/opt/rustwide/target/debug/deps/libvec_map-9437af413e5e5769.rmeta --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" "b55ec561727b4ae5a81254228f9b9334163ad5aa45f44586005d08b491a6029c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b55ec561727b4ae5a81254228f9b9334163ad5aa45f44586005d08b491a6029c", kill_on_drop: false }`
[INFO] [stdout] b55ec561727b4ae5a81254228f9b9334163ad5aa45f44586005d08b491a6029c
