[INFO] cloning repository https://github.com/redox-os/extrautils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/redox-os/extrautils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fextrautils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fextrautils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f9cf9c6ff8f06d53a0f803a744a49d931494adc
[INFO] documenting redox-os/extrautils against try#6ee483316d2e4581572121d60a955affb2032eb3+cargoflags=-Zrustdoc-scrape-examples for scrape-examples
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fredox-os%2Fextrautils" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/redox-os/extrautils on toolchain 6ee483316d2e4581572121d60a955affb2032eb3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/redox-os/extrautils
[INFO] finished tweaking git repo https://github.com/redox-os/extrautils
[INFO] tweaked toml for git repo https://github.com/redox-os/extrautils written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/redox-os/extrautils already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b65c49da4206b1448df1f6e5dca6bbb768e49897a49557ec7833c6fa2bc7918
[INFO] running `Command { std: "docker" "start" "-a" "8b65c49da4206b1448df1f6e5dca6bbb768e49897a49557ec7833c6fa2bc7918", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b65c49da4206b1448df1f6e5dca6bbb768e49897a49557ec7833c6fa2bc7918", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b65c49da4206b1448df1f6e5dca6bbb768e49897a49557ec7833c6fa2bc7918", kill_on_drop: false }`
[INFO] [stdout] 8b65c49da4206b1448df1f6e5dca6bbb768e49897a49557ec7833c6fa2bc7918
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json" "-Zrustdoc-scrape-examples", kill_on_drop: false }`
[INFO] [stdout] 1e915374731e4f2245139c0447aaa9fc4a28f989e7ff63878e855cd306a73c6c
[INFO] running `Command { std: "docker" "start" "-a" "1e915374731e4f2245139c0447aaa9fc4a28f989e7ff63878e855cd306a73c6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking podio v0.1.7
[INFO] [stderr]     Checking rle-decode-fast v1.0.3
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking redox_syscall v0.2.16
[INFO] [stderr]     Checking raw-cpuid v10.5.0
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking arg_parser v0.1.0 (https://gitlab.redox-os.org/redox-os/arg-parser.git#1c434b55)
[INFO] [stderr]     Checking extra v0.1.0 (https://gitlab.redox-os.org/redox-os/libextra.git#cf213969)
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]    Compiling rust-lzma v0.5.1
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking termion v1.5.6 (https://gitlab.redox-os.org/redox-os/termion.git#8054e082)
[INFO] [stderr]     Checking filetime v0.2.14 (https://gitlab.redox-os.org/redox-os/filetime.git?branch=redox#5bcbaaed)
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking tar v0.4.38
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking msdos_time v0.1.6
[INFO] [stderr]     Checking pager v0.1.0 (https://gitlab.redox-os.org/redox-os/libpager.git#d0ff9e28)
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking zip v0.3.3
[INFO] [stderr]     Checking tree_magic v0.3.0 (https://github.com/aahancoc/tree_magic.git?rev=56fd014b4e4aefea7d1e37d4216595624511cefc#56fd014b)
[INFO] [stderr]     Scraping extrautils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: failed to scan bin "mdless" in package `extrautils` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `extrautils` (bin "mdless") generated 1 warning
[INFO] [stderr]  Documenting extrautils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `extrautils`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name calc src/bin/calc.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=2e49bc219d98d40c -Zunstable-options -L dependency=/opt/rustwide/target/debug/deps --extern arg_parser=/opt/rustwide/target/debug/deps/libarg_parser-ddb92fdd20a0b5bb.rmeta --extern bzip2=/opt/rustwide/target/debug/deps/libbzip2-db27a7bbc6c81d0d.rmeta --extern extra=/opt/rustwide/target/debug/deps/libextra-9040996f7d6bc770.rmeta --extern filetime=/opt/rustwide/target/debug/deps/libfiletime-3be1f7e6117db099.rmeta --extern libflate=/opt/rustwide/target/debug/deps/liblibflate-d16b141aa68e5c42.rmeta --extern pager=/opt/rustwide/target/debug/deps/libpager-b2cf05c47b725c92.rmeta --extern raw_cpuid=/opt/rustwide/target/debug/deps/libraw_cpuid-5a9182345a26a4a1.rmeta --extern syscall=/opt/rustwide/target/debug/deps/libsyscall-7eff8f2d0b82d4fc.rmeta --extern lzma=/opt/rustwide/target/debug/deps/liblzma-3ba61b2fd38ce431.rmeta --extern tar=/opt/rustwide/target/debug/deps/libtar-f1be491d58e7b7ca.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-3fc79dd318904982.rmeta --extern tree_magic=/opt/rustwide/target/debug/deps/libtree_magic-25c3c667b8f7c823.rmeta --extern zip=/opt/rustwide/target/debug/deps/libzip-b5cf96f58ff2935d.rmeta --cap-lints=forbid --crate-version 0.1.0 --with-examples /opt/rustwide/target/debug/deps/extrautils-b909446deb5594e0.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-330d9c64e84f6b24.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-c9dbb05161ac65dd.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-606c01a671a53e1d.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-15662f3ac2220178.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-cade0f8f19f7a4f0.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-a486ebb9ee5d9877.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-88e08e57566a916d.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-bceb84ae386d69d1.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-2397e7ee9019e26c.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-30c72d9caa048612.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-9c89648433c80b51.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-493a90d08c38f45c.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-5114c2a7f422d3be.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-9bdb5329b1b86a89.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-910d1f661ef02040.examples --with-examples /opt/rustwide/target/debug/deps/extrautils-ab4fe55cf515f46e.examples` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1e915374731e4f2245139c0447aaa9fc4a28f989e7ff63878e855cd306a73c6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e915374731e4f2245139c0447aaa9fc4a28f989e7ff63878e855cd306a73c6c", kill_on_drop: false }`
[INFO] [stdout] 1e915374731e4f2245139c0447aaa9fc4a28f989e7ff63878e855cd306a73c6c