[INFO] cloning repository https://github.com/YoloDev/skorm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/YoloDev/skorm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYoloDev%2Fskorm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYoloDev%2Fskorm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c0e896de8868bf8ccbeaaf9428d5a317f21c130a
[INFO] documenting YoloDev/skorm 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%2FYoloDev%2Fskorm" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/YoloDev/skorm 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] removed /workspace/builds/worker-15/source/.cargo/config
[INFO] started tweaking git repo https://github.com/YoloDev/skorm
[INFO] finished tweaking git repo https://github.com/YoloDev/skorm
[INFO] tweaked toml for git repo https://github.com/YoloDev/skorm written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/YoloDev/skorm 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] c4fc20d231faed59da66bfa1a948a09f3a75932d879f144e540802ff70853402
[INFO] running `Command { std: "docker" "start" "-a" "c4fc20d231faed59da66bfa1a948a09f3a75932d879f144e540802ff70853402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4fc20d231faed59da66bfa1a948a09f3a75932d879f144e540802ff70853402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4fc20d231faed59da66bfa1a948a09f3a75932d879f144e540802ff70853402", kill_on_drop: false }`
[INFO] [stdout] c4fc20d231faed59da66bfa1a948a09f3a75932d879f144e540802ff70853402
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 2cbb1531bb8b35ce1456f1f96b4e959a52bf9400cae5ec0f85cfc74cd8ab6917
[INFO] running `Command { std: "docker" "start" "-a" "2cbb1531bb8b35ce1456f1f96b4e959a52bf9400cae5ec0f85cfc74cd8ab6917", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]     Checking skorm-core v0.1.0 (/opt/rustwide/workdir/crates/core)
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]  Documenting skorm-core v0.1.0 (/opt/rustwide/workdir/crates/core)
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/core/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/core/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(never_type)]
[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 `skorm-core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name skorm_core crates/core/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 --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2cbb1531bb8b35ce1456f1f96b4e959a52bf9400cae5ec0f85cfc74cd8ab6917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cbb1531bb8b35ce1456f1f96b4e959a52bf9400cae5ec0f85cfc74cd8ab6917", kill_on_drop: false }`
[INFO] [stdout] 2cbb1531bb8b35ce1456f1f96b4e959a52bf9400cae5ec0f85cfc74cd8ab6917
