[INFO] cloning repository https://github.com/JulianKnodt/quick_maths
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JulianKnodt/quick_maths" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJulianKnodt%2Fquick_maths", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJulianKnodt%2Fquick_maths'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18539a92d83bb2fe683e16e91d073abdc8f1b807
[INFO] documenting JulianKnodt/quick_maths against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJulianKnodt%2Fquick_maths" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JulianKnodt/quick_maths on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JulianKnodt/quick_maths
[INFO] finished tweaking git repo https://github.com/JulianKnodt/quick_maths
[INFO] tweaked toml for git repo https://github.com/JulianKnodt/quick_maths written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/JulianKnodt/quick_maths already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.5.1
[INFO] [stderr]   Downloaded quickcheck v0.9.2
[INFO] [stderr]   Downloaded quote v1.0.7
[INFO] [stderr]   Downloaded rand v0.7.3
[INFO] [stderr]   Downloaded lazy_static v1.4.0
[INFO] [stderr]   Downloaded thread_local v1.0.1
[INFO] [stderr]   Downloaded env_logger v0.7.1
[INFO] [stderr]   Downloaded num v0.2.1
[INFO] [stderr]   Downloaded num-iter v0.1.40
[INFO] [stderr]   Downloaded log v0.4.8
[INFO] [stderr]   Downloaded rand_hc v0.2.0
[INFO] [stderr]   Downloaded num-bigint v0.2.6
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.8
[INFO] [stderr]   Downloaded proc-macro2 v1.0.18
[INFO] [stderr]   Downloaded num-integer v0.1.42
[INFO] [stderr]   Downloaded memchr v2.3.3
[INFO] [stderr]   Downloaded autocfg v1.0.0
[INFO] [stderr]   Downloaded regex v1.3.9
[INFO] [stderr]   Downloaded regex-syntax v0.6.18
[INFO] [stderr]   Downloaded num-complex v0.2.4
[INFO] [stderr]   Downloaded syn v1.0.32
[INFO] [stderr]   Downloaded num-rational v0.2.4
[INFO] [stderr]   Downloaded aho-corasick v0.7.12
[INFO] [stderr]   Downloaded serde v1.0.113
[INFO] [stderr]   Downloaded num-traits v0.2.11
[INFO] [stderr]   Downloaded wasi v0.9.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded serde_derive v1.0.113
[INFO] [stderr]   Downloaded unicode-xid v0.2.0
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded rand_chacha v0.2.2
[INFO] [stderr]   Downloaded cfg-if v0.1.10
[INFO] [stderr]   Downloaded libc v0.2.71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d661748e89a76ee437ee37e7a10e7039ba6c12252c42a03f948ee0c5c24dab35
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d661748e89a76ee437ee37e7a10e7039ba6c12252c42a03f948ee0c5c24dab35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d661748e89a76ee437ee37e7a10e7039ba6c12252c42a03f948ee0c5c24dab35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d661748e89a76ee437ee37e7a10e7039ba6c12252c42a03f948ee0c5c24dab35", kill_on_drop: false }`
[INFO] [stdout] d661748e89a76ee437ee37e7a10e7039ba6c12252c42a03f948ee0c5c24dab35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df2368416d64ad7781147135d464a405e0580ae0259ab16e859f4ae766460e8b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "df2368416d64ad7781147135d464a405e0580ae0259ab16e859f4ae766460e8b", kill_on_drop: false }`
[INFO] [stderr]  Documenting quick_maths v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_generics, maybe_uninit_uninit_array, new_uninit, array_map)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `quick_maths`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name quick_maths src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-20b9f5fb82bebd1b.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-2a60f69ad2992aed.rmeta --cap-lints=warn --crate-version 0.2.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "df2368416d64ad7781147135d464a405e0580ae0259ab16e859f4ae766460e8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df2368416d64ad7781147135d464a405e0580ae0259ab16e859f4ae766460e8b", kill_on_drop: false }`
[INFO] [stdout] df2368416d64ad7781147135d464a405e0580ae0259ab16e859f4ae766460e8b
