[INFO] cloning repository https://github.com/matthiaskrgr/cargo-rebuild-check
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matthiaskrgr/cargo-rebuild-check" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthiaskrgr%2Fcargo-rebuild-check", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthiaskrgr%2Fcargo-rebuild-check'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d54fa01899ab0b14fd29fa0e585e8b1bad9bfefa
[INFO] documenting matthiaskrgr/cargo-rebuild-check 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%2Fmatthiaskrgr%2Fcargo-rebuild-check" "/workspace/builds/worker-69/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-69/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matthiaskrgr/cargo-rebuild-check 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/matthiaskrgr/cargo-rebuild-check
[INFO] finished tweaking git repo https://github.com/matthiaskrgr/cargo-rebuild-check
[INFO] tweaked toml for git repo https://github.com/matthiaskrgr/cargo-rebuild-check written to /workspace/builds/worker-69/source/Cargo.toml
[INFO] crate git repo https://github.com/matthiaskrgr/cargo-rebuild-check 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] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/beta/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[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 lazy_static v1.0.2
[INFO] [stderr]   Downloaded miow v0.3.1
[INFO] [stderr]   Downloaded socket2 v0.3.7
[INFO] [stderr]   Downloaded cmake v0.1.31
[INFO] [stderr]   Downloaded libz-sys v1.0.18
[INFO] [stderr]   Downloaded commoncrypto-sys v0.2.0
[INFO] [stderr]   Downloaded commoncrypto v0.2.0
[INFO] [stderr]   Downloaded schannel v0.1.13
[INFO] [stderr]   Downloaded curl v0.4.12
[INFO] [stderr]   Downloaded crypto-hash v0.3.1
[INFO] [stderr]   Downloaded filetime v0.2.1
[INFO] [stderr]   Downloaded proc-macro2 v0.4.8
[INFO] [stderr]   Downloaded rand v0.5.4
[INFO] [stderr]   Downloaded tempfile v3.0.3
[INFO] [stderr]   Downloaded openssl v0.10.10
[INFO] [stderr]   Downloaded home v0.3.3
[INFO] [stderr]   Downloaded crates-io v0.16.0
[INFO] [stderr]   Downloaded globset v0.4.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.33
[INFO] [stderr]   Downloaded shell-escape v0.1.4
[INFO] [stderr]   Downloaded quote v0.6.3
[INFO] [stderr]   Downloaded syn v0.14.4
[INFO] [stderr]   Downloaded serde_ignored v0.0.4
[INFO] [stderr]   Downloaded jobserver v0.1.11
[INFO] [stderr]   Downloaded git2 v0.7.2
[INFO] [stderr]   Downloaded regex-syntax v0.6.2
[INFO] [stderr]   Downloaded tar v0.4.16
[INFO] [stderr]   Downloaded ignore v0.4.2
[INFO] [stderr]   Downloaded curl-sys v0.4.6
[INFO] [stderr]   Downloaded git2-curl v0.8.1
[INFO] [stderr]   Downloaded cargo v0.28.0
[INFO] [stderr]   Downloaded libssh2-sys v0.2.8
[INFO] [stderr]   Downloaded libgit2-sys v0.7.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] [stdout] fccc1765fa42a06204d7eb84c4681ab97d653138e46aa26de9de6f20d194501b
[INFO] running `Command { std: "docker" "start" "-a" "fccc1765fa42a06204d7eb84c4681ab97d653138e46aa26de9de6f20d194501b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fccc1765fa42a06204d7eb84c4681ab97d653138e46aa26de9de6f20d194501b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fccc1765fa42a06204d7eb84c4681ab97d653138e46aa26de9de6f20d194501b", kill_on_drop: false }`
[INFO] [stdout] fccc1765fa42a06204d7eb84c4681ab97d653138e46aa26de9de6f20d194501b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] [stdout] 869179bfcf68650bfb6412e86ce05f310c2fad27d0f3efada33c3b53c71f5cc9
[INFO] running `Command { std: "docker" "start" "-a" "869179bfcf68650bfb6412e86ce05f310c2fad27d0f3efada33c3b53c71f5cc9", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/beta/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling pkg-config v0.3.12
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]     Checking lazy_static v1.0.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]     Checking matches v0.1.7
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]    Compiling openssl v0.10.10
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking same-file v1.0.2
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking shell-escape v0.1.4
[INFO] [stderr]     Checking home v0.3.3
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]    Compiling proc-macro2 v0.4.8
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking walkdir v2.1.4
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking socket2 v0.3.7
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking rand v0.5.4
[INFO] [stderr]     Checking filetime v0.2.1
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking jobserver v0.1.11
[INFO] [stderr]     Checking tar v0.4.16
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]    Compiling openssl-sys v0.9.33
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling curl-sys v0.4.6
[INFO] [stderr]    Compiling libssh2-sys v0.2.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling libgit2-sys v0.7.5
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking tempfile v3.0.3
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking flate2 v1.0.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking serde_json v1.0.24
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking serde_ignored v0.0.4
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking globset v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking env_logger v0.5.10
[INFO] [stderr]     Checking ignore v0.4.2
[INFO] [stderr]     Checking crypto-hash v0.3.1
[INFO] [stderr]     Checking curl v0.4.12
[INFO] [stderr]     Checking crates-io v0.16.0
[INFO] [stderr]     Checking git2 v0.7.2
[INFO] [stderr]     Checking git2-curl v0.8.1
[INFO] [stderr]     Checking cargo v0.28.0
[INFO] [stderr]  Documenting cargo-rebuild-check v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview, use_extern_macros)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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(rust_2018_preview, use_extern_macros)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0705.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `cargo-rebuild-check`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name cargo_rebuild_check 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 cargo=/opt/rustwide/target/debug/deps/libcargo-4a5539c86d823350.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-36c25036d61e582e.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-dca6182f525f67c6.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "869179bfcf68650bfb6412e86ce05f310c2fad27d0f3efada33c3b53c71f5cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "869179bfcf68650bfb6412e86ce05f310c2fad27d0f3efada33c3b53c71f5cc9", kill_on_drop: false }`
[INFO] [stdout] 869179bfcf68650bfb6412e86ce05f310c2fad27d0f3efada33c3b53c71f5cc9
