[INFO] cloning repository https://github.com/tarkah/karaoke-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tarkah/karaoke-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarkah%2Fkaraoke-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarkah%2Fkaraoke-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0747427e6f2eb3a81482dbe3f7181cb5120feced
[INFO] documenting tarkah/karaoke-rs against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarkah%2Fkaraoke-rs" "/workspace/builds/worker-39/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-39/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tarkah/karaoke-rs on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tarkah/karaoke-rs
[INFO] finished tweaking git repo https://github.com/tarkah/karaoke-rs
[INFO] tweaked toml for git repo https://github.com/tarkah/karaoke-rs written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate git repo https://github.com/tarkah/karaoke-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a37a3d878ddadc19ff3a2ff5865e623ada299329ea99d75d6f1ac28e1c2bce3
[INFO] running `Command { std: "docker" "start" "-a" "0a37a3d878ddadc19ff3a2ff5865e623ada299329ea99d75d6f1ac28e1c2bce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a37a3d878ddadc19ff3a2ff5865e623ada299329ea99d75d6f1ac28e1c2bce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a37a3d878ddadc19ff3a2ff5865e623ada299329ea99d75d6f1ac28e1c2bce3", kill_on_drop: false }`
[INFO] [stdout] 0a37a3d878ddadc19ff3a2ff5865e623ada299329ea99d75d6f1ac28e1c2bce3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "RUSTDOCFLAGS=--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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54a8d6aaebff3b0468f661624677192eb5fd02c8c19db5e05a602b86aa155b2e
[INFO] running `Command { std: "docker" "start" "-a" "54a8d6aaebff3b0468f661624677192eb5fd02c8c19db5e05a602b86aa155b2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking copyless v0.1.4
[INFO] [stderr]     Checking dtoa v0.4.5
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling encoding_rs v0.8.22
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]    Compiling v_htmlescape v0.4.5
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking owning_ref v0.2.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking takeable-option v0.4.0
[INFO] [stderr]     Checking smallvec v0.3.4
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking cdg v0.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr] error: could not compile `futures`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name futures /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.29/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="use_std"' --cfg 'feature="with-deprecated"' -C metadata=c4396d5ac3d87dac -C extra-filename=-c4396d5ac3d87dac --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `xml-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name xml /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/xml-rs-0.8.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=150d1920bfab59b2 -C extra-filename=-150d1920bfab59b2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.14/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=149382b8d3fc84f6 -C extra-filename=-149382b8d3fc84f6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `cc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name cc --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cc-1.0.50/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=5c6631cfa7bc8c5a -C extra-filename=-5c6631cfa7bc8c5a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.104/build.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="serde_derive"' --cfg 'feature="std"' -C metadata=34dab390e2888694 -C extra-filename=-34dab390e2888694 --out-dir /opt/rustwide/target/debug/build/serde-34dab390e2888694 -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[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-1.0.14/build.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=ac34deee8a3c2d8d -C extra-filename=-ac34deee8a3c2d8d --out-dir /opt/rustwide/target/debug/build/syn-ac34deee8a3c2d8d -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `yaml-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name yaml_rust /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yaml-rust-0.4.3/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=da2a0f6c69fb0efb -C extra-filename=-da2a0f6c69fb0efb --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern linked_hash_map=/opt/rustwide/target/debug/deps/liblinked_hash_map-1faffaf6854e24f6.rmeta --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `crossbeam-utils`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name crossbeam_utils /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-utils-0.6.6/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="lazy_static"' --cfg 'feature="std"' -C metadata=1dee17045e90b6c7 -C extra-filename=-1dee17045e90b6c7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-f0be138ff93e7396.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.14/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=8494ecbbcb94ca3f -C extra-filename=-8494ecbbcb94ca3f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `crossbeam`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name crossbeam /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-0.2.12/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=2e1d4dd32215f963 -C extra-filename=-2e1d4dd32215f963 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `xml-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name xml /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/xml-rs-0.8.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=8d27a37b408b8256 -C extra-filename=-8d27a37b408b8256 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `strsim`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name strsim /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/strsim-0.7.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=d10790cb4a33b4be -C extra-filename=-d10790cb4a33b4be --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `autocfg`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name autocfg /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/autocfg-1.0.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=4b3ad7719166f012 -C extra-filename=-4b3ad7719166f012 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `semver-parser`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name semver_parser /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/semver-parser-0.7.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=03acc8acbf834953 -C extra-filename=-03acc8acbf834953 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "54a8d6aaebff3b0468f661624677192eb5fd02c8c19db5e05a602b86aa155b2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54a8d6aaebff3b0468f661624677192eb5fd02c8c19db5e05a602b86aa155b2e", kill_on_drop: false }`
[INFO] [stdout] 54a8d6aaebff3b0468f661624677192eb5fd02c8c19db5e05a602b86aa155b2e