[INFO] cloning repository https://github.com/plavelo/placc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/plavelo/placc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplavelo%2Fplacc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplavelo%2Fplacc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d8d276e988b00d6fa2d4921341b484319302c04
[INFO] checking plavelo/placc against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fplavelo%2Fplacc" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/plavelo/placc on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/plavelo/placc
[INFO] finished tweaking git repo https://github.com/plavelo/placc
[INFO] tweaked toml for git repo https://github.com/plavelo/placc written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/plavelo/placc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24f6628ea850996c2293d3a6004a89f296cf0d9f6e01607062fd405e6c195aa6
[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" "24f6628ea850996c2293d3a6004a89f296cf0d9f6e01607062fd405e6c195aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24f6628ea850996c2293d3a6004a89f296cf0d9f6e01607062fd405e6c195aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24f6628ea850996c2293d3a6004a89f296cf0d9f6e01607062fd405e6c195aa6", kill_on_drop: false }`
[INFO] [stdout] 24f6628ea850996c2293d3a6004a89f296cf0d9f6e01607062fd405e6c195aa6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c910a32ba361261d5ca8a9941e114a4bb72b733c2f2c62502a56cd0dfa356de
[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" "1c910a32ba361261d5ca8a9941e114a4bb72b733c2f2c62502a56cd0dfa356de", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking thread_local v1.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking pcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `merge_results`
[INFO] [stdout]   --> src/parser.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn merge_results<Output>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse`
[INFO] [stdout]   --> src/parser.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn parse<'a, P, Output>(parser: P, source: &'a str) -> Result<Success<Output>, Failure>
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `and`
[INFO] [stdout]    --> src/parser.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn and<'a, A, B, OutputA, OutputB>(parser1: A, parser2: B) -> impl Parser<'a, (OutputA, OutputB)>
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `or`
[INFO] [stdout]    --> src/parser.rs:137:4
[INFO] [stdout]     |
[INFO] [stdout] 137 | fn or<'a, P1, P2, Output>(parser1: P1, parser2: P2) -> impl Parser<'a, Output>
[INFO] [stdout]     |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `many`
[INFO] [stdout]    --> src/parser.rs:152:4
[INFO] [stdout]     |
[INFO] [stdout] 152 | fn many<'a, P, Output>(parser: P) -> impl Parser<'a, Vec<Output>>
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `map`
[INFO] [stdout]    --> src/parser.rs:182:4
[INFO] [stdout]     |
[INFO] [stdout] 182 | fn map<'a, P, F, Input, Output>(parser: P, func: F) -> impl Parser<'a, Output>
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `regex`
[INFO] [stdout]    --> src/parser.rs:205:4
[INFO] [stdout]     |
[INFO] [stdout] 205 | fn regex<'a>(pattern: &'a str, group: usize) -> impl Parser<'a, String> {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sep_by`
[INFO] [stdout]    --> src/parser.rs:228:4
[INFO] [stdout]     |
[INFO] [stdout] 228 | fn sep_by<'a, P, S, OutputP, OutputS>(parser: P, separator: S) -> impl Parser<'a, Vec<OutputP>>
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sep_by1`
[INFO] [stdout]    --> src/parser.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn sep_by1<'a, P, S, OutputP, OutputS>(parser: P, separator: S) -> impl Parser<'a, Vec<OutputP>>
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `skip`
[INFO] [stdout]    --> src/parser.rs:300:4
[INFO] [stdout]     |
[INFO] [stdout] 300 | fn skip<'a, P1, P2, Output1, Output2>(parser1: P1, parser2: P2) -> impl Parser<'a, Output1>
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `string`
[INFO] [stdout]    --> src/parser.rs:310:4
[INFO] [stdout]     |
[INFO] [stdout] 310 | fn string<'a>(string: &'a str) -> impl Parser<'a, String> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `then`
[INFO] [stdout]    --> src/parser.rs:333:4
[INFO] [stdout]     |
[INFO] [stdout] 333 | fn then<'a, P1, P2, Output1, Output2>(parser1: P1, parser2: P2) -> impl Parser<'a, Output2>
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.86s
[INFO] running `Command { std: "docker" "inspect" "1c910a32ba361261d5ca8a9941e114a4bb72b733c2f2c62502a56cd0dfa356de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c910a32ba361261d5ca8a9941e114a4bb72b733c2f2c62502a56cd0dfa356de", kill_on_drop: false }`
[INFO] [stdout] 1c910a32ba361261d5ca8a9941e114a4bb72b733c2f2c62502a56cd0dfa356de