[INFO] cloning repository https://github.com/pcein/quizapp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pcein/quizapp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpcein%2Fquizapp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpcein%2Fquizapp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7f96d5cf637587ecda31188fd665474f6f7dfa2
[INFO] documenting pcein/quizapp 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%2Fpcein%2Fquizapp" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pcein/quizapp 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/pcein/quizapp
[INFO] finished tweaking git repo https://github.com/pcein/quizapp
[INFO] tweaked toml for git repo https://github.com/pcein/quizapp written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/pcein/quizapp 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] d5c61d5156cbeb53af2e44e352a524b230220a3e7196a0ecdb8b2ba820b0eb08
[INFO] running `Command { std: "docker" "start" "-a" "d5c61d5156cbeb53af2e44e352a524b230220a3e7196a0ecdb8b2ba820b0eb08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5c61d5156cbeb53af2e44e352a524b230220a3e7196a0ecdb8b2ba820b0eb08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5c61d5156cbeb53af2e44e352a524b230220a3e7196a0ecdb8b2ba820b0eb08", kill_on_drop: false }`
[INFO] [stdout] d5c61d5156cbeb53af2e44e352a524b230220a3e7196a0ecdb8b2ba820b0eb08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] eceb2083a035eeccd63621b3b0f7248910f7c1a3b69893868a570127dfe30590
[INFO] running `Command { std: "docker" "start" "-a" "eceb2083a035eeccd63621b3b0f7248910f7c1a3b69893868a570127dfe30590", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling version_check v0.1.0
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]     Checking matches v0.1.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.4
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]    Compiling gcc v0.3.43
[INFO] [stderr]     Checking term v0.4.5
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking httparse v1.2.1
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.4.0
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking serde v0.9.7
[INFO] [stderr]     Checking itoa v0.3.1
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]     Checking dtoa v0.4.1
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]     Checking linked-hash-map v0.2.1
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]     Checking pest v0.3.3
[INFO] [stderr]     Checking quick-error v1.1.0
[INFO] [stderr]     Checking state v0.2.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking unicode-bidi v0.2.4
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]    Compiling mime v0.2.2
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/state-0.2.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/state-0.2.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking thread-id v3.0.0
[INFO] [stderr]     Checking num_cpus v1.2.1
[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/state-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]     Checking lru-cache v0.1.0
[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/state-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `state`
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "eceb2083a035eeccd63621b3b0f7248910f7c1a3b69893868a570127dfe30590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eceb2083a035eeccd63621b3b0f7248910f7c1a3b69893868a570127dfe30590", kill_on_drop: false }`
[INFO] [stdout] eceb2083a035eeccd63621b3b0f7248910f7c1a3b69893868a570127dfe30590
