[INFO] cloning repository https://github.com/rustyrazorblade/UselessDB
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rustyrazorblade/UselessDB" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustyrazorblade%2FUselessDB", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustyrazorblade%2FUselessDB'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dfa3060ea7fc21c5d86ad915db2ba4e8111c047f
[INFO] documenting rustyrazorblade/UselessDB against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustyrazorblade%2FUselessDB" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rustyrazorblade/UselessDB on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rustyrazorblade/UselessDB
[INFO] finished tweaking git repo https://github.com/rustyrazorblade/UselessDB
[INFO] tweaked toml for git repo https://github.com/rustyrazorblade/UselessDB written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/rustyrazorblade/UselessDB already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-10/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/kevinmehall/rust-peg.git`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d5a489ac6e60690789420c85a000f850cb5664646f2dbe651308a306cfdba8f
[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" "5d5a489ac6e60690789420c85a000f850cb5664646f2dbe651308a306cfdba8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d5a489ac6e60690789420c85a000f850cb5664646f2dbe651308a306cfdba8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d5a489ac6e60690789420c85a000f850cb5664646f2dbe651308a306cfdba8f", kill_on_drop: false }`
[INFO] [stdout] 5d5a489ac6e60690789420c85a000f850cb5664646f2dbe651308a306cfdba8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77fe5dfe53431999cd144222edef3ca1c9fab638eb2e2478f9aa4aedf2c6a163
[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" "77fe5dfe53431999cd144222edef3ca1c9fab638eb2e2478f9aa4aedf2c6a163", kill_on_drop: false }`
[INFO] [stderr]    Compiling peg-runtime v0.6.3 (https://github.com/kevinmehall/rust-peg.git#a589e857)
[INFO] [stderr]     Checking byteorder v0.4.2
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling peg-macros v0.6.3 (https://github.com/kevinmehall/rust-peg.git#a589e857)
[INFO] [stderr]     Checking peg v0.6.3 (https://github.com/kevinmehall/rust-peg.git#a589e857)
[INFO] [stderr]  Documenting uselessdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `(`, `[`, or `{`, found `useless`
[INFO] [stdout]    --> src/main.rs:360:11
[INFO] [stdout]     |
[INFO] [stdout] 360 | peg_file! useless("useless.rustpeg");
[INFO] [stdout]     |           ^^^^^^^ expected one of `(`, `[`, or `{`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `uselessdb`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name uselessdb 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 bufstream=/opt/rustwide/target/debug/deps/libbufstream-43e42649265204f9.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-ec8ddf82d4c6824a.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-00a572b43ee135b2.rmeta --extern peg=/opt/rustwide/target/debug/deps/libpeg-01363b64e5a82a3e.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "77fe5dfe53431999cd144222edef3ca1c9fab638eb2e2478f9aa4aedf2c6a163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77fe5dfe53431999cd144222edef3ca1c9fab638eb2e2478f9aa4aedf2c6a163", kill_on_drop: false }`
[INFO] [stdout] 77fe5dfe53431999cd144222edef3ca1c9fab638eb2e2478f9aa4aedf2c6a163