[INFO] cloning repository https://github.com/akky2501/mincaml-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akky2501/mincaml-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakky2501%2Fmincaml-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakky2501%2Fmincaml-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8295cf3166d850c830ed45b1330d7f8230eb119
[INFO] documenting akky2501/mincaml-rust 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%2Fakky2501%2Fmincaml-rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/akky2501/mincaml-rust 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/akky2501/mincaml-rust
[INFO] finished tweaking git repo https://github.com/akky2501/mincaml-rust
[INFO] tweaked toml for git repo https://github.com/akky2501/mincaml-rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/akky2501/mincaml-rust 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]  Downloading crates ...
[INFO] [stderr]   Downloaded nom v2.2.0
[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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f9beb2e1d94f0a068e02736edb516e5aaa986ae359baf6b93cd993209c500db
[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" "6f9beb2e1d94f0a068e02736edb516e5aaa986ae359baf6b93cd993209c500db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f9beb2e1d94f0a068e02736edb516e5aaa986ae359baf6b93cd993209c500db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f9beb2e1d94f0a068e02736edb516e5aaa986ae359baf6b93cd993209c500db", kill_on_drop: false }`
[INFO] [stdout] 6f9beb2e1d94f0a068e02736edb516e5aaa986ae359baf6b93cd993209c500db
[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" "+beta-2020-08-29" "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] 769101b3fcced0fbd9c2648231c60ec01db5ca59e696c4ab1ca5174163795d5d
[INFO] running `Command { std: "docker" "start" "-a" "769101b3fcced0fbd9c2648231c60ec01db5ca59e696c4ab1ca5174163795d5d", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v0.2.5
[INFO] [stderr]     Checking nom v2.2.0
[INFO] [stderr]  Documenting mincaml-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: casts cannot be followed by a method call
[INFO] [stdout]    --> src/typing.rs:324:23
[INFO] [stdout]     |
[INFO] [stdout] 324 |             Ok(infer!(id : ty.generalize(env), t2))
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try surrounding the expression in parentheses
[INFO] [stdout]     |
[INFO] [stdout] 324 |             Ok(infer!((id : ty).generalize(env), t2))
[INFO] [stdout]     |                       ^       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casts cannot be followed by a method call
[INFO] [stdout]    --> src/typing.rs:358:23
[INFO] [stdout]     |
[INFO] [stdout] 358 |             Ok(infer!(name : fun_type.generalize(env), t))
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try surrounding the expression in parentheses
[INFO] [stdout]     |
[INFO] [stdout] 358 |             Ok(infer!((name : fun_type).generalize(env), t))
[INFO] [stdout]     |                       ^               ^
[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 `mincaml-rust`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name mincaml_rust 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 lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-6521e401bb427d4d.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-37e577c94dbbd99c.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-beaf2ee7159f9d7a.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "769101b3fcced0fbd9c2648231c60ec01db5ca59e696c4ab1ca5174163795d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "769101b3fcced0fbd9c2648231c60ec01db5ca59e696c4ab1ca5174163795d5d", kill_on_drop: false }`
[INFO] [stdout] 769101b3fcced0fbd9c2648231c60ec01db5ca59e696c4ab1ca5174163795d5d