[INFO] fetching crate semverver 0.1.46...
[INFO] documenting semverver-0.1.46 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate semverver 0.1.46 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate semverver 0.1.46 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate semverver 0.1.46
[INFO] finished tweaking crates.io crate semverver 0.1.46
[INFO] tweaked toml for crates.io crate semverver 0.1.46 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate semverver 0.1.46 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded git2-curl v0.11.0
[INFO] [stderr]   Downloaded fwdansi v1.0.1
[INFO] [stderr]   Downloaded crates-io v0.30.0
[INFO] [stderr]   Downloaded cargo v0.42.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07f4b7e0b8ef47cbbd78b39a0d5d08d6b3cdac607e4e11362a01630f4d7edcf6
[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" "07f4b7e0b8ef47cbbd78b39a0d5d08d6b3cdac607e4e11362a01630f4d7edcf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07f4b7e0b8ef47cbbd78b39a0d5d08d6b3cdac607e4e11362a01630f4d7edcf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07f4b7e0b8ef47cbbd78b39a0d5d08d6b3cdac607e4e11362a01630f4d7edcf6", kill_on_drop: false }`
[INFO] [stdout] 07f4b7e0b8ef47cbbd78b39a0d5d08d6b3cdac607e4e11362a01630f4d7edcf6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] 85681e542d756a8a7a9ec45dcbaea614ada0581d67d32b3ef61a0b066fefda40
[INFO] running `Command { std: "docker" "start" "-a" "85681e542d756a8a7a9ec45dcbaea614ada0581d67d32b3ef61a0b066fefda40", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]     Checking shell-escape v0.1.4
[INFO] [stderr]     Checking rustc-workspace-hack v1.0.0
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]    Compiling semverver v0.1.46 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking opener v0.4.1
[INFO] [stderr]     Checking bytesize v1.0.0
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]    Compiling num_cpus v1.11.0
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]    Compiling jobserver v0.1.17
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking tar v0.4.26
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]    Compiling openssl-sys v0.9.52
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.2
[INFO] [stderr]    Compiling curl-sys v0.4.24
[INFO] [stderr]    Compiling backtrace-sys v0.1.35
[INFO] [stderr]    Compiling libssh2-sys v0.2.13
[INFO] [stderr]    Compiling libgit2-sys v0.9.2
[INFO] [stderr]     Checking flate2 v1.0.12
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]    Compiling openssl v0.10.25
[INFO] [stderr]    Compiling curl v0.4.25
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking git2 v0.10.2
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking git2-curl v0.11.0
[INFO] [stderr]     Checking serde v1.0.102
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking serde_ignored v0.1.1
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking cargo-platform v0.1.1
[INFO] [stderr]     Checking rustfix v0.4.6
[INFO] [stderr]     Checking crates-io v0.30.0
[INFO] [stderr]     Checking cargo v0.42.0
[INFO] [stderr]  Documenting semverver v0.1.46 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate rustc_ast;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[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 E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `semverver`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name semverver src/lib.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-a8e79418b1b189fe.rmeta --extern crates_io=/opt/rustwide/target/debug/deps/libcrates_io-3a6378a2f89a8e91.rmeta --extern curl=/opt/rustwide/target/debug/deps/libcurl-db1aff8ee1dd4615.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-ead75989b8ed30ff.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-9c4d0b380a338ae0.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-69d9a7f018cb28c7.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-ce61c6cf9a823f58.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-f0d5208e7f9cb40f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-c6b3c85625226cb0.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-c920773d77fdf4ef.rmeta --cap-lints=warn --crate-version 0.1.46` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate rustc_ast;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[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 E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "85681e542d756a8a7a9ec45dcbaea614ada0581d67d32b3ef61a0b066fefda40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85681e542d756a8a7a9ec45dcbaea614ada0581d67d32b3ef61a0b066fefda40", kill_on_drop: false }`
[INFO] [stdout] 85681e542d756a8a7a9ec45dcbaea614ada0581d67d32b3ef61a0b066fefda40
