[INFO] cloning repository https://github.com/peroveri/em-refactor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peroveri/em-refactor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperoveri%2Fem-refactor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperoveri%2Fem-refactor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e52f0de7a6ef7300cb68d4f4f6c0a50a9ab46b27
[INFO] documenting peroveri/em-refactor 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%2Fperoveri%2Fem-refactor" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peroveri/em-refactor 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] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] removed /workspace/builds/worker-0/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/peroveri/em-refactor
[INFO] finished tweaking git repo https://github.com/peroveri/em-refactor
[INFO] tweaked toml for git repo https://github.com/peroveri/em-refactor written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/peroveri/em-refactor 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 638f70dc7172d42402523e154e12544637b0e4eaa59574a76166eaeb6b62beb3
[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" "638f70dc7172d42402523e154e12544637b0e4eaa59574a76166eaeb6b62beb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "638f70dc7172d42402523e154e12544637b0e4eaa59574a76166eaeb6b62beb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "638f70dc7172d42402523e154e12544637b0e4eaa59574a76166eaeb6b62beb3", kill_on_drop: false }`
[INFO] [stdout] 638f70dc7172d42402523e154e12544637b0e4eaa59574a76166eaeb6b62beb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 56fd981890ac18d72dc8f92aa846334c3dfbc3d1f1c7eac8927255cb916f138d
[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" "56fd981890ac18d72dc8f92aa846334c3dfbc3d1f1c7eac8927255cb916f138d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking if_chain v1.0.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking em-refactor-lib-types v0.1.0 (/opt/rustwide/workdir/em-refactor-lib-types)
[INFO] [stderr]  Documenting em-refactor-lib-types v0.1.0 (/opt/rustwide/workdir/em-refactor-lib-types)
[INFO] [stderr]     Checking em-refactor-lib v0.1.0 (/opt/rustwide/workdir/em-refactor-lib)
[INFO] [stderr]  Documenting em-refactor-lib v0.1.0 (/opt/rustwide/workdir/em-refactor-lib)
[INFO] [stderr]  Documenting em-refactor-experiments v0.1.0 (/opt/rustwide/workdir/em-refactor-experiments)
[INFO] [stdout] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stdout]  --> em-refactor-lib/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | 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 `em-refactor-lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name em_refactor_lib em-refactor-lib/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 em_refactor_lib_types=/opt/rustwide/target/debug/deps/libem_refactor_lib_types-600045577b08da3d.rmeta --extern if_chain=/opt/rustwide/target/debug/deps/libif_chain-da373e1333ae0b17.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-c07b291a42270fad.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-f98656827f9024a4.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-c2196568b6a69f24.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 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]  --> em-refactor-lib/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | 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" "56fd981890ac18d72dc8f92aa846334c3dfbc3d1f1c7eac8927255cb916f138d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56fd981890ac18d72dc8f92aa846334c3dfbc3d1f1c7eac8927255cb916f138d", kill_on_drop: false }`
[INFO] [stdout] 56fd981890ac18d72dc8f92aa846334c3dfbc3d1f1c7eac8927255cb916f138d
