[INFO] fetching crate pom 3.1.0...
[INFO] checking pom-3.1.0 against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] extracting crate pom 3.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pom 3.1.0 on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pom 3.1.0
[INFO] finished tweaking crates.io crate pom 3.1.0
[INFO] tweaked toml for crates.io crate pom 3.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate pom 3.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 879d08444ab3a904c5b18f48a711421bb14fe506d727bed2d65b9ca893761fa6
[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" "879d08444ab3a904c5b18f48a711421bb14fe506d727bed2d65b9ca893761fa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "879d08444ab3a904c5b18f48a711421bb14fe506d727bed2d65b9ca893761fa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "879d08444ab3a904c5b18f48a711421bb14fe506d727bed2d65b9ca893761fa6", kill_on_drop: false }`
[INFO] [stdout] 879d08444ab3a904c5b18f48a711421bb14fe506d727bed2d65b9ca893761fa6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3445b7c4e57065a7df921ef5ecd1bd5ca8df644493e7fda8bd315f0d981cf2c7
[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" "3445b7c4e57065a7df921ef5ecd1bd5ca8df644493e7fda8bd315f0d981cf2c7", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking pom v3.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> examples/whitespace.rs:77:2
[INFO] [stdout]    |
[INFO] [stdout] 77 |       (
[INFO] [stdout]    |  _____^
[INFO] [stdout] 78 | |         whitespace() *
[INFO] [stdout] 79 | |         list(
[INFO] [stdout] 80 | |             call(container),
[INFO] [stdout] 81 | |             whitespace()
[INFO] [stdout] 82 | |         )
[INFO] [stdout] 83 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 77 |     
[INFO] [stdout] 78 |         whitespace() *
[INFO] [stdout] 79 |         list(
[INFO] [stdout] 80 |             call(container),
[INFO] [stdout] 81 |             whitespace()
[INFO] [stdout] 82 |         )
[INFO] [stdout]  ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `outputOk`
[INFO] [stdout]   --> examples/sandbox.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let outputOk = crlf().parse("test".as_bytes());
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_outputOk`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `outputErr`
[INFO] [stdout]   --> examples/sandbox.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let outputErr = crlf().parse(&input);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_outputErr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `outputOk` should have a snake case name
[INFO] [stdout]   --> examples/sandbox.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let outputOk = crlf().parse("test".as_bytes());
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `output_ok`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `outputErr` should have a snake case name
[INFO] [stdout]   --> examples/sandbox.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let outputErr = crlf().parse(&input);
[INFO] [stdout]    |         ^^^^^^^^^ help: convert the identifier to snake case: `output_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "3445b7c4e57065a7df921ef5ecd1bd5ca8df644493e7fda8bd315f0d981cf2c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3445b7c4e57065a7df921ef5ecd1bd5ca8df644493e7fda8bd315f0d981cf2c7", kill_on_drop: false }`
[INFO] [stdout] 3445b7c4e57065a7df921ef5ecd1bd5ca8df644493e7fda8bd315f0d981cf2c7