[INFO] cloning repository https://github.com/Crypec/Stegi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Crypec/Stegi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrypec%2FStegi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrypec%2FStegi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23907cdaacdd555e28098ff168ff0af51192929c
[INFO] documenting Crypec/Stegi against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCrypec%2FStegi" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Crypec/Stegi on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Crypec/Stegi
[INFO] finished tweaking git repo https://github.com/Crypec/Stegi
[INFO] tweaked toml for git repo https://github.com/Crypec/Stegi written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Crypec/Stegi already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dyn-fmt v0.1.2
[INFO] [stderr]   Downloaded ngrammatic v0.2.1
[INFO] [stderr]   Downloaded unicode_reader v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 571004920be1e713c43a98375fa96be1f8ab20b2dfa8dc8cade115d81a4f10ac
[INFO] running `Command { std: "docker" "start" "-a" "571004920be1e713c43a98375fa96be1f8ab20b2dfa8dc8cade115d81a4f10ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "571004920be1e713c43a98375fa96be1f8ab20b2dfa8dc8cade115d81a4f10ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "571004920be1e713c43a98375fa96be1f8ab20b2dfa8dc8cade115d81a4f10ac", kill_on_drop: false }`
[INFO] [stdout] 571004920be1e713c43a98375fa96be1f8ab20b2dfa8dc8cade115d81a4f10ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4ed50b1577e1bb4b4fedd82f0c093bfd6e1954fcca2d72845f0d4799832acfb2
[INFO] running `Command { std: "docker" "start" "-a" "4ed50b1577e1bb4b4fedd82f0c093bfd6e1954fcca2d72845f0d4799832acfb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking tinyvec v0.3.3
[INFO] [stderr]     Checking os_str_bytes v2.3.1
[INFO] [stderr]     Checking ngrammatic v0.2.1
[INFO] [stderr]     Checking dyn-fmt v0.1.2
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking indexmap v1.4.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libssh2-sys v0.2.18
[INFO] [stderr]    Compiling backtrace-sys v0.1.34
[INFO] [stderr]    Compiling libgit2-sys v0.12.7+1.0.0
[INFO] [stderr]     Checking unicode_reader v1.0.0
[INFO] [stderr]     Checking unicode-normalization v0.1.13
[INFO] [stderr]     Checking backtrace v0.3.45
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking git2 v0.13.6
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.3
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]    Compiling structopt-derive v0.4.8
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.1
[INFO] [stderr]     Checking structopt v0.3.15
[INFO] [stderr]     Checking clap v3.0.0-beta.1
[INFO] [stderr]  Documenting stegi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax, box_patterns)]
[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 `stegi`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name stegi src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-6cf283cfbe048757.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-11e6deff6ad962b5.rmeta --extern derivative=/opt/rustwide/target/debug/deps/libderivative-10949ac74b5e1782.so --extern dyn_fmt=/opt/rustwide/target/debug/deps/libdyn_fmt-5edff0906ede77ac.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-f8d9f3d085e45f45.rmeta --extern git2=/opt/rustwide/target/debug/deps/libgit2-3d7a28f10ea4c5db.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-029696837cd6fb58.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-c07b291a42270fad.rmeta --extern ngrammatic=/opt/rustwide/target/debug/deps/libngrammatic-2463831ae5338118.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-20f2a0964dcf0d2f.rmeta --extern unicode_reader=/opt/rustwide/target/debug/deps/libunicode_reader-89d68071903811f1.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4ed50b1577e1bb4b4fedd82f0c093bfd6e1954fcca2d72845f0d4799832acfb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ed50b1577e1bb4b4fedd82f0c093bfd6e1954fcca2d72845f0d4799832acfb2", kill_on_drop: false }`
[INFO] [stdout] 4ed50b1577e1bb4b4fedd82f0c093bfd6e1954fcca2d72845f0d4799832acfb2
