[INFO] fetching crate semververfork 0.1.64...
[INFO] documenting semververfork-0.1.64 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate semververfork 0.1.64 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate semververfork 0.1.64 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate semververfork 0.1.64
[INFO] finished tweaking crates.io crate semververfork 0.1.64
[INFO] tweaked toml for crates.io crate semververfork 0.1.64 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate semververfork 0.1.64 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--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] 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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49b8ab5a61e4dfd4ce9c75c8e0d83ec31dd204fd627db7383ae35afbf8c37bb5
[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" "49b8ab5a61e4dfd4ce9c75c8e0d83ec31dd204fd627db7383ae35afbf8c37bb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49b8ab5a61e4dfd4ce9c75c8e0d83ec31dd204fd627db7383ae35afbf8c37bb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49b8ab5a61e4dfd4ce9c75c8e0d83ec31dd204fd627db7383ae35afbf8c37bb5", kill_on_drop: false }`
[INFO] [stdout] 49b8ab5a61e4dfd4ce9c75c8e0d83ec31dd204fd627db7383ae35afbf8c37bb5
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f22cbde4dfac53ffa9d49c6042df9fbcacab2467bad76c4ae2a58ef77f175683
[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" "f22cbde4dfac53ffa9d49c6042df9fbcacab2467bad76c4ae2a58ef77f175683", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling semververfork v0.1.64 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking proc-macro2 v1.0.18
[INFO] [stderr]     Checking filetime v0.2.10
[INFO] [stderr]     Checking jobserver v0.1.21
[INFO] [stderr]    Compiling cc v1.0.56
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]     Checking serde v1.0.114
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking im-rc v14.3.0
[INFO] [stderr]     Checking tar v0.4.29
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.4+1.41.0
[INFO] [stderr]    Compiling curl-sys v0.4.32+curl-7.70.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.18
[INFO] [stderr]    Compiling libgit2-sys v0.12.7+1.0.0
[INFO] [stderr]     Checking flate2 v1.0.16
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling curl v0.4.30
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking git2 v0.13.6
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_ignored v0.1.2
[INFO] [stderr]     Checking cargo-platform v0.1.1
[INFO] [stderr]     Checking crates-io v0.31.0
[INFO] [stderr]     Checking rustfix v0.5.1
[INFO] [stderr]     Checking crates-io v0.32.0
[INFO] [stderr]     Checking git2-curl v0.14.0
[INFO] [stderr]     Checking cargo v0.45.1
[INFO] [stderr]  Documenting semververfork v0.1.64 (/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[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 `semververfork`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name semververfork 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 anyhow=/opt/rustwide/target/debug/deps/libanyhow-e3ef598a83e1d346.rmeta --extern cargo=/opt/rustwide/target/debug/deps/libcargo-69dc6df94e49d678.rmeta --extern crates_io=/opt/rustwide/target/debug/deps/libcrates_io-b93cf289be4c6bec.rmeta --extern curl=/opt/rustwide/target/debug/deps/libcurl-dec76be0d2f3dd18.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-0cc84693806b4d31.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-1b53669f640bf8d7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-3c1af858b4846f24.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-b7630b4c4e1ae38e.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-b868b408f51cee7b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-c373e03ada2a3b2d.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-1103c83f4cac59b2.rmeta --cap-lints=warn --crate-version 0.1.64` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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" "f22cbde4dfac53ffa9d49c6042df9fbcacab2467bad76c4ae2a58ef77f175683", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f22cbde4dfac53ffa9d49c6042df9fbcacab2467bad76c4ae2a58ef77f175683", kill_on_drop: false }`
[INFO] [stdout] f22cbde4dfac53ffa9d49c6042df9fbcacab2467bad76c4ae2a58ef77f175683
