[INFO] cloning repository https://github.com/jonathanmcelroy/rust_progress_file_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonathanmcelroy/rust_progress_file_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathanmcelroy%2Frust_progress_file_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathanmcelroy%2Frust_progress_file_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dca5424957121c256051f1e0825db8dd41135318
[INFO] documenting jonathanmcelroy/rust_progress_file_server 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%2Fjonathanmcelroy%2Frust_progress_file_server" "/workspace/builds/worker-23/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonathanmcelroy/rust_progress_file_server 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] started tweaking git repo https://github.com/jonathanmcelroy/rust_progress_file_server
[INFO] finished tweaking git repo https://github.com/jonathanmcelroy/rust_progress_file_server
[INFO] tweaked toml for git repo https://github.com/jonathanmcelroy/rust_progress_file_server written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate git repo https://github.com/jonathanmcelroy/rust_progress_file_server 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded url v1.3.0
[INFO] [stderr]   Downloaded rocket_contrib v0.1.5
[INFO] [stderr]   Downloaded unicode-normalization v0.1.3
[INFO] [stderr]   Downloaded httparse v1.2.1
[INFO] [stderr]   Downloaded rocket_codegen v0.1.5
[INFO] [stderr]   Downloaded docopt v0.7.0
[INFO] [stderr]   Downloaded solicit v0.4.4
[INFO] [stderr]   Downloaded thread-id v3.0.0
[INFO] [stderr]   Downloaded term v0.4.4
[INFO] [stderr]   Downloaded dtoa v0.2.2
[INFO] [stderr]   Downloaded itoa v0.1.1
[INFO] [stderr]   Downloaded same-file v0.1.2
[INFO] [stderr]   Downloaded thread_local v0.3.2
[INFO] [stderr]   Downloaded regex v0.2.1
[INFO] [stderr]   Downloaded num_cpus v1.2.1
[INFO] [stderr]   Downloaded mime v0.2.2
[INFO] [stderr]   Downloaded unicode-bidi v0.2.4
[INFO] [stderr]   Downloaded libc v0.2.20
[INFO] [stderr]   Downloaded regex-syntax v0.4.0
[INFO] [stderr]   Downloaded rocket v0.1.5
[INFO] [stderr]   Downloaded num-traits v0.1.36
[INFO] [stderr]   Downloaded lazy_static v0.2.2
[INFO] [stderr]   Downloaded aho-corasick v0.6.1
[INFO] [stderr]   Downloaded serde_json v0.8.6
[INFO] [stderr]   Downloaded hyper v0.9.14
[INFO] [stderr]   Downloaded hyper v0.10.0
[INFO] [stderr]   Downloaded rust-ini v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 2470adab0884fc2feef81910d765d40b0cd08185829f82cf0cc12636e787ce5d
[INFO] running `Command { std: "docker" "start" "-a" "2470adab0884fc2feef81910d765d40b0cd08185829f82cf0cc12636e787ce5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2470adab0884fc2feef81910d765d40b0cd08185829f82cf0cc12636e787ce5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2470adab0884fc2feef81910d765d40b0cd08185829f82cf0cc12636e787ce5d", kill_on_drop: false }`
[INFO] [stdout] 2470adab0884fc2feef81910d765d40b0cd08185829f82cf0cc12636e787ce5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 3cf3ea218382b1c6816d2bb2cea47d02bc1272b62d0f49d97bed3aae0639254a
[INFO] running `Command { std: "docker" "start" "-a" "3cf3ea218382b1c6816d2bb2cea47d02bc1272b62d0f49d97bed3aae0639254a", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking matches v0.1.4
[INFO] [stderr]     Checking unicode-normalization v0.1.3
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking httparse v1.2.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.4.0
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]    Compiling unicase v1.4.0
[INFO] [stderr]     Checking unicode-bidi v0.2.4
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking mime v0.2.2
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking rust-ini v0.10.0
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking num_cpus v1.2.1
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking same-file v0.1.2
[INFO] [stderr]     Checking thread_local v0.3.2
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]     Checking walkdir v1.0.7
[INFO] [stderr]     Checking aho-corasick v0.6.1
[INFO] [stderr]    Compiling idna v0.1.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling rocket_codegen v0.1.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket_codegen-0.1.5/build.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[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: could not compile `rocket_codegen` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3cf3ea218382b1c6816d2bb2cea47d02bc1272b62d0f49d97bed3aae0639254a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cf3ea218382b1c6816d2bb2cea47d02bc1272b62d0f49d97bed3aae0639254a", kill_on_drop: false }`
[INFO] [stdout] 3cf3ea218382b1c6816d2bb2cea47d02bc1272b62d0f49d97bed3aae0639254a