[INFO] cloning repository https://github.com/Ragnaroek/mithril
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ragnaroek/mithril" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRagnaroek%2Fmithril", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRagnaroek%2Fmithril'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d678e9b92735fe7b2bd01c50f94dbc20125b75a
[INFO] documenting Ragnaroek/mithril against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRagnaroek%2Fmithril" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ragnaroek/mithril on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-14/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Ragnaroek/mithril
[INFO] finished tweaking git repo https://github.com/Ragnaroek/mithril
[INFO] tweaked toml for git repo https://github.com/Ragnaroek/mithril written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/Ragnaroek/mithril already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/Ragnaroek/rust-argon2`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bandit v0.12.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b494bb80f6d6d5008dd3aa6aca5f90c88091e9eda36829a04d553b7098c5f489
[INFO] running `Command { std: "docker" "start" "-a" "b494bb80f6d6d5008dd3aa6aca5f90c88091e9eda36829a04d553b7098c5f489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b494bb80f6d6d5008dd3aa6aca5f90c88091e9eda36829a04d553b7098c5f489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b494bb80f6d6d5008dd3aa6aca5f90c88091e9eda36829a04d553b7098c5f489", kill_on_drop: false }`
[INFO] [stdout] b494bb80f6d6d5008dd3aa6aca5f90c88091e9eda36829a04d553b7098c5f489
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fab807b60fa7d88912de60f522eb1cae3a6a8da70f97fd944a572a250ade4b5
[INFO] running `Command { std: "docker" "start" "-a" "3fab807b60fa7d88912de60f522eb1cae3a6a8da70f97fd944a572a250ade4b5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking rust-argon2 v0.8.3 (https://github.com/Ragnaroek/rust-argon2#b54e4eaa)
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking config v0.11.0
[INFO] [stderr]     Checking strum v0.21.0
[INFO] [stderr]     Checking bandit v0.12.3
[INFO] [stderr]  Documenting mithril v0.20.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(repr_simd)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(integer_atomics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `mithril`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name mithril src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c9ad78f0b8a8a55c -L dependency=/opt/rustwide/target/debug/deps --extern bandit=/opt/rustwide/target/debug/deps/libbandit-5a4fea2b2db7099d.rmeta --extern blake2b_simd=/opt/rustwide/target/debug/deps/libblake2b_simd-cca70a2683722d16.rmeta --extern config=/opt/rustwide/target/debug/deps/libconfig-32241c8e71b366df.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-0f9cc3f156718306.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-76c2b33714e7bdeb.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-9a2801dfb0bf593f.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-1e3c371ab90a7930.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-1717e129a25f0cc3.rmeta --extern argon2=/opt/rustwide/target/debug/deps/libargon2-eb8fd85db578d7c3.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-cf67764d0a47da35.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-bf75f7c26eea6964.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-19fad81b68b884c7.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-7f8e518ac3b5cd1f.rmeta --cap-lints=warn --crate-version 0.20.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3fab807b60fa7d88912de60f522eb1cae3a6a8da70f97fd944a572a250ade4b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fab807b60fa7d88912de60f522eb1cae3a6a8da70f97fd944a572a250ade4b5", kill_on_drop: false }`
[INFO] [stdout] 3fab807b60fa7d88912de60f522eb1cae3a6a8da70f97fd944a572a250ade4b5