[INFO] cloning repository https://github.com/playXE/libimmixcons
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/playXE/libimmixcons" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplayXE%2Flibimmixcons", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplayXE%2Flibimmixcons'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ad4e34d80901df03e349a19fa6ee431b01fab92
[INFO] documenting playXE/libimmixcons 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%2FplayXE%2Flibimmixcons" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/playXE/libimmixcons 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/playXE/libimmixcons
[INFO] finished tweaking git repo https://github.com/playXE/libimmixcons
[INFO] tweaked toml for git repo https://github.com/playXE/libimmixcons written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 0dd0b2fa78cd4e9a914fff68c4244862a2a2aa1e2c767fcb15e21f0a0583544c
[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" "0dd0b2fa78cd4e9a914fff68c4244862a2a2aa1e2c767fcb15e21f0a0583544c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0dd0b2fa78cd4e9a914fff68c4244862a2a2aa1e2c767fcb15e21f0a0583544c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dd0b2fa78cd4e9a914fff68c4244862a2a2aa1e2c767fcb15e21f0a0583544c", kill_on_drop: false }`
[INFO] [stdout] 0dd0b2fa78cd4e9a914fff68c4244862a2a2aa1e2c767fcb15e21f0a0583544c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 10465e9713eefc2d579cc8e3ac24fabce72de5a1b3d0c9dc348381498455c642
[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" "10465e9713eefc2d579cc8e3ac24fabce72de5a1b3d0c9dc348381498455c642", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking simple_logger v1.13.0
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking time v0.2.27
[INFO] [stderr]  Documenting libimmixcons v0.1.0 (/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(
[INFO] [stdout] 4  | |     allocator_api,
[INFO] [stdout] 5  | |     asm,
[INFO] [stdout] 6  | |     nonnull_slice_from_raw_parts,
[INFO] [stdout] ...  |
[INFO] [stdout] 10 | |     thread_local
[INFO] [stdout] 11 | | )]
[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 `libimmixcons`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type cdylib --crate-type rlib --crate-type staticlib --crate-name libimmixcons src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="atomic"' --cfg 'feature="default"' --cfg 'feature="line-size-128"' --cfg 'feature="parking_lot"' --cfg 'feature="parking_lot_core"' --cfg 'feature="threaded"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern atomic=/opt/rustwide/target/debug/deps/libatomic-5fe12bdd7230bc1c.rmeta --extern errno=/opt/rustwide/target/debug/deps/liberrno-8abf6584e29fa7c3.rmeta --extern instant=/opt/rustwide/target/debug/deps/libinstant-b326b56bb31dad2e.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-bfefceb9a5bd20e6.rmeta --extern memmap=/opt/rustwide/target/debug/deps/libmemmap-0ccb982c0c326eb0.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-1b80003de675d828.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-40d59d1154fa7ad9.rmeta --extern parking_lot_core=/opt/rustwide/target/debug/deps/libparking_lot_core-dc31c3097afb13b6.rmeta --extern simple_logger=/opt/rustwide/target/debug/deps/libsimple_logger-b04fbb328cbc577d.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-5a09d9faf838dba9.rmeta --extern vec_map=/opt/rustwide/target/debug/deps/libvec_map-036eecef551b0592.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "10465e9713eefc2d579cc8e3ac24fabce72de5a1b3d0c9dc348381498455c642", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10465e9713eefc2d579cc8e3ac24fabce72de5a1b3d0c9dc348381498455c642", kill_on_drop: false }`
[INFO] [stdout] 10465e9713eefc2d579cc8e3ac24fabce72de5a1b3d0c9dc348381498455c642
