[INFO] cloning repository https://github.com/luke-bhan/arbre
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luke-bhan/arbre" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluke-bhan%2Farbre", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluke-bhan%2Farbre'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d600525795cde8c958366113080e4a58d82fcbfc
[INFO] documenting luke-bhan/arbre against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluke-bhan%2Farbre" "/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/luke-bhan/arbre on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/luke-bhan/arbre
[INFO] finished tweaking git repo https://github.com/luke-bhan/arbre
[INFO] tweaked toml for git repo https://github.com/luke-bhan/arbre written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/luke-bhan/arbre already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fae56176f89775b9d130f6ad1b9b9797738fb9f5a7b70e40b8cf327970f7b68
[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" "7fae56176f89775b9d130f6ad1b9b9797738fb9f5a7b70e40b8cf327970f7b68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fae56176f89775b9d130f6ad1b9b9797738fb9f5a7b70e40b8cf327970f7b68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fae56176f89775b9d130f6ad1b9b9797738fb9f5a7b70e40b8cf327970f7b68", kill_on_drop: false }`
[INFO] [stdout] 7fae56176f89775b9d130f6ad1b9b9797738fb9f5a7b70e40b8cf327970f7b68
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9e3d1c967d4b37b1c9183ffbddb8b207fb3cf74ede5a84ad9a691c7c954fbd4
[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" "a9e3d1c967d4b37b1c9183ffbddb8b207fb3cf74ede5a84ad9a691c7c954fbd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]     Checking adler32 v1.1.0
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]  Documenting arbre v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: environment variable `GIT_AUTHOR_NAME` not defined
[INFO] [stdout]   --> src/main.rs:81:28
[INFO] [stdout]    |
[INFO] [stdout] 81 |                 let name = env!("GIT_AUTHOR_NAME").to_string();
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: environment variable `GIT_AUTHOR_EMAIL` not defined
[INFO] [stdout]   --> src/main.rs:82:29
[INFO] [stdout]    |
[INFO] [stdout] 82 |                 let email = env!("GIT_AUTHOR_EMAIL").to_string();
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `arbre`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name arbre 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 chrono=/opt/rustwide/target/debug/deps/libchrono-f57ef66ea2d05ad6.rmeta --extern deflate=/opt/rustwide/target/debug/deps/libdeflate-e1254df58963812d.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-88b93a2a096ee79e.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-ca1b5f40ef9231e6.rmeta --extern crypto=/opt/rustwide/target/debug/deps/libcrypto-3ff175565533c2e1.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "a9e3d1c967d4b37b1c9183ffbddb8b207fb3cf74ede5a84ad9a691c7c954fbd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9e3d1c967d4b37b1c9183ffbddb8b207fb3cf74ede5a84ad9a691c7c954fbd4", kill_on_drop: false }`
[INFO] [stdout] a9e3d1c967d4b37b1c9183ffbddb8b207fb3cf74ede5a84ad9a691c7c954fbd4