[INFO] fetching crate gcmap 0.1.4...
[INFO] testing gcmap-0.1.4 against 1.55.0 for beta-1.56-1
[INFO] extracting crate gcmap 0.1.4 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate gcmap 0.1.4 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gcmap 0.1.4
[INFO] finished tweaking crates.io crate gcmap 0.1.4
[INFO] tweaked toml for crates.io crate gcmap 0.1.4 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d15a96a29474eeaacd119aa501762916b43c116ae98965d0d46b4bd80d0d3c5
[INFO] running `Command { std: "docker" "start" "-a" "6d15a96a29474eeaacd119aa501762916b43c116ae98965d0d46b4bd80d0d3c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d15a96a29474eeaacd119aa501762916b43c116ae98965d0d46b4bd80d0d3c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d15a96a29474eeaacd119aa501762916b43c116ae98965d0d46b4bd80d0d3c5", kill_on_drop: false }`
[INFO] [stdout] 6d15a96a29474eeaacd119aa501762916b43c116ae98965d0d46b4bd80d0d3c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e0124a6af551f596de7c9fc104e1794305f9b10c94e9c55aa2c855f98e47f44
[INFO] running `Command { std: "docker" "start" "-a" "9e0124a6af551f596de7c9fc104e1794305f9b10c94e9c55aa2c855f98e47f44", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gcmap v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.17s
[INFO] running `Command { std: "docker" "inspect" "9e0124a6af551f596de7c9fc104e1794305f9b10c94e9c55aa2c855f98e47f44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e0124a6af551f596de7c9fc104e1794305f9b10c94e9c55aa2c855f98e47f44", kill_on_drop: false }`
[INFO] [stdout] 9e0124a6af551f596de7c9fc104e1794305f9b10c94e9c55aa2c855f98e47f44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7c229a17b259fdfb92235727c1ea5f1f5085f641b4e3299696b8cf97025db90
[INFO] running `Command { std: "docker" "start" "-a" "e7c229a17b259fdfb92235727c1ea5f1f5085f641b4e3299696b8cf97025db90", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcmap v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `mark`
[INFO] [stdout]    --> src/lib.rs:224:10
[INFO] [stdout]     |
[INFO] [stdout] 224 |     let (mark, _) = wm.insert(2, 8);
[INFO] [stdout]     |          ^^^^ help: if this is intentional, prefix it with an underscore: `_mark`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mark`
[INFO] [stdout]    --> src/lib.rs:251:47
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let val = wm.entry(1).or_insert_with(|mark|2);
[INFO] [stdout]     |                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "e7c229a17b259fdfb92235727c1ea5f1f5085f641b4e3299696b8cf97025db90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7c229a17b259fdfb92235727c1ea5f1f5085f641b4e3299696b8cf97025db90", kill_on_drop: false }`
[INFO] [stdout] e7c229a17b259fdfb92235727c1ea5f1f5085f641b4e3299696b8cf97025db90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 330c12e669f394458f062d79b0c0798deca53d3bcc6276478fcdae9ee8bd6fa9
[INFO] running `Command { std: "docker" "start" "-a" "330c12e669f394458f062d79b0c0798deca53d3bcc6276478fcdae9ee8bd6fa9", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `mark`
[INFO] [stderr]    --> src/lib.rs:224:10
[INFO] [stderr]     |
[INFO] [stderr] 224 |     let (mark, _) = wm.insert(2, 8);
[INFO] [stderr]     |          ^^^^ help: if this is intentional, prefix it with an underscore: `_mark`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mark`
[INFO] [stderr]    --> src/lib.rs:251:47
[INFO] [stderr]     |
[INFO] [stderr] 251 |         let val = wm.entry(1).or_insert_with(|mark|2);
[INFO] [stderr]     |                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_mark`
[INFO] [stderr] 
[INFO] [stderr] warning: `gcmap` (lib test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gcmap-bfb4e72c0acd02b9)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test entry ... ok
[INFO] [stdout] test iter ... ok
[INFO] [stdout] test foo ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.86s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests gcmap
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "330c12e669f394458f062d79b0c0798deca53d3bcc6276478fcdae9ee8bd6fa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "330c12e669f394458f062d79b0c0798deca53d3bcc6276478fcdae9ee8bd6fa9", kill_on_drop: false }`
[INFO] [stdout] 330c12e669f394458f062d79b0c0798deca53d3bcc6276478fcdae9ee8bd6fa9