[INFO] cloning repository https://github.com/cgag/loc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cgag/loc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcgag%2Floc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcgag%2Floc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c906a48568ffb69ef6c46af9d6a8f60b69e57c5
[INFO] checking cgag/loc against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcgag%2Floc" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cgag/loc on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cgag/loc
[INFO] finished tweaking git repo https://github.com/cgag/loc
[INFO] tweaked toml for git repo https://github.com/cgag/loc written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/cgag/loc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05eab78d980dcc8122871988cf0e97444a793baeeadcd00ce9e3c23322e50256
[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" "05eab78d980dcc8122871988cf0e97444a793baeeadcd00ce9e3c23322e50256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05eab78d980dcc8122871988cf0e97444a793baeeadcd00ce9e3c23322e50256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05eab78d980dcc8122871988cf0e97444a793baeeadcd00ce9e3c23322e50256", kill_on_drop: false }`
[INFO] [stdout] 05eab78d980dcc8122871988cf0e97444a793baeeadcd00ce9e3c23322e50256
[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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2879cf79051d5f856ff8affe760a9c9ff76d5f72190415b3a6e94edb1f20f50a
[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" "2879cf79051d5f856ff8affe760a9c9ff76d5f72190415b3a6e94edb1f20f50a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking edit-distance v2.1.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]     Checking loc v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:676:29
[INFO] [stdout]     |
[INFO] [stdout] 676 |                     let (_, mut end) = multi_stack.last().expect("stack last");
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:676:29
[INFO] [stdout]     |
[INFO] [stdout] 676 |                     let (_, mut end) = multi_stack.last().expect("stack last");
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.67s
[INFO] running `Command { std: "docker" "inspect" "2879cf79051d5f856ff8affe760a9c9ff76d5f72190415b3a6e94edb1f20f50a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2879cf79051d5f856ff8affe760a9c9ff76d5f72190415b3a6e94edb1f20f50a", kill_on_drop: false }`
[INFO] [stdout] 2879cf79051d5f856ff8affe760a9c9ff76d5f72190415b3a6e94edb1f20f50a