[INFO] cloning repository https://github.com/lshlyapnikov/grokking-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lshlyapnikov/grokking-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flshlyapnikov%2Fgrokking-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flshlyapnikov%2Fgrokking-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5cce67cceb595b89af1df13426ddd9d453c86a06 [INFO] testing lshlyapnikov/grokking-rust against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flshlyapnikov%2Fgrokking-rust" "/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/lshlyapnikov/grokking-rust on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/lshlyapnikov/grokking-rust [INFO] removed workspace from git repo https://github.com/lshlyapnikov/grokking-rust [INFO] finished tweaking git repo https://github.com/lshlyapnikov/grokking-rust [INFO] tweaked toml for git repo https://github.com/lshlyapnikov/grokking-rust written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/lshlyapnikov/grokking-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] error: the lock file /workspace/builds/worker-4/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", 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] 3223ea50eac7011a0aaf9eeb13d7f92ff6872db91ab2f1133558cabb1603ef65 [INFO] running `Command { std: "docker" "start" "-a" "3223ea50eac7011a0aaf9eeb13d7f92ff6872db91ab2f1133558cabb1603ef65", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3223ea50eac7011a0aaf9eeb13d7f92ff6872db91ab2f1133558cabb1603ef65", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3223ea50eac7011a0aaf9eeb13d7f92ff6872db91ab2f1133558cabb1603ef65", kill_on_drop: false }` [INFO] [stdout] 3223ea50eac7011a0aaf9eeb13d7f92ff6872db91ab2f1133558cabb1603ef65 [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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2eece0c481ccf41cfc8dab11492cc186379c3e38c56d35b1c564f72ac7537e62 [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" "2eece0c481ccf41cfc8dab11492cc186379c3e38c56d35b1c564f72ac7537e62", kill_on_drop: false }` [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Compiling winapi v0.2.8 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling utf8-ranges v0.1.3 [INFO] [stderr] Compiling regex-syntax v0.3.9 [INFO] [stderr] Compiling memchr v0.1.11 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling aho-corasick v0.5.3 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling thread-id v2.0.0 [INFO] [stderr] Compiling thread_local v0.2.7 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stderr] Compiling rand v0.3.23 [INFO] [stderr] Compiling regex v0.1.80 [INFO] [stderr] Compiling env_logger v0.3.5 [INFO] [stderr] Compiling quickcheck v0.2.27 [INFO] [stderr] Compiling grokking-rust v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `volumes` [INFO] [stdout] --> src/grok/waterpouring.rs:40:7 [INFO] [stdout] | [INFO] [stdout] 40 | let volumes: Vec = vec![0, max_volumes.len()]; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_volumes` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `required_volume` [INFO] [stdout] --> src/grok/waterpouring.rs:39:40 [INFO] [stdout] | [INFO] [stdout] 39 | pub fn solve(max_volumes: &Vec, required_volume: usize) -> State { [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_required_volume` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Fill` [INFO] [stdout] --> src/grok/waterpouring.rs:5:3 [INFO] [stdout] | [INFO] [stdout] 5 | Fill { glass: usize }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Empty` [INFO] [stdout] --> src/grok/waterpouring.rs:6:3 [INFO] [stdout] | [INFO] [stdout] 6 | Empty { glass: usize }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Transfer` [INFO] [stdout] --> src/grok/waterpouring.rs:7:3 [INFO] [stdout] | [INFO] [stdout] 7 | Transfer { from: usize, to: usize }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `solve` [INFO] [stdout] --> src/grok/waterpouring.rs:39:8 [INFO] [stdout] | [INFO] [stdout] 39 | pub fn solve(max_volumes: &Vec, required_volume: usize) -> State { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 17.45s [INFO] running `Command { std: "docker" "inspect" "2eece0c481ccf41cfc8dab11492cc186379c3e38c56d35b1c564f72ac7537e62", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2eece0c481ccf41cfc8dab11492cc186379c3e38c56d35b1c564f72ac7537e62", kill_on_drop: false }` [INFO] [stdout] 2eece0c481ccf41cfc8dab11492cc186379c3e38c56d35b1c564f72ac7537e62 [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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--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] 9cc02e860031e1cec20a5f2aba932824dd3a0ac78ab454d6b9f71fed749b5fab [INFO] running `Command { std: "docker" "start" "-a" "9cc02e860031e1cec20a5f2aba932824dd3a0ac78ab454d6b9f71fed749b5fab", kill_on_drop: false }` [INFO] [stderr] Compiling grokking-rust v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `volumes` [INFO] [stdout] --> src/grok/waterpouring.rs:40:7 [INFO] [stdout] | [INFO] [stdout] 40 | let volumes: Vec = vec![0, max_volumes.len()]; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_volumes` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `required_volume` [INFO] [stdout] --> src/grok/waterpouring.rs:39:40 [INFO] [stdout] | [INFO] [stdout] 39 | pub fn solve(max_volumes: &Vec, required_volume: usize) -> State { [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_required_volume` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Fill` [INFO] [stdout] --> src/grok/waterpouring.rs:5:3 [INFO] [stdout] | [INFO] [stdout] 5 | Fill { glass: usize }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Empty` [INFO] [stdout] --> src/grok/waterpouring.rs:6:3 [INFO] [stdout] | [INFO] [stdout] 6 | Empty { glass: usize }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Transfer` [INFO] [stdout] --> src/grok/waterpouring.rs:7:3 [INFO] [stdout] | [INFO] [stdout] 7 | Transfer { from: usize, to: usize }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `solve` [INFO] [stdout] --> src/grok/waterpouring.rs:39:8 [INFO] [stdout] | [INFO] [stdout] 39 | pub fn solve(max_volumes: &Vec, required_volume: usize) -> State { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.21s [INFO] running `Command { std: "docker" "inspect" "9cc02e860031e1cec20a5f2aba932824dd3a0ac78ab454d6b9f71fed749b5fab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9cc02e860031e1cec20a5f2aba932824dd3a0ac78ab454d6b9f71fed749b5fab", kill_on_drop: false }` [INFO] [stdout] 9cc02e860031e1cec20a5f2aba932824dd3a0ac78ab454d6b9f71fed749b5fab [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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 4802ba04c099fcb08bb4d85fa9f1be7cf08e61b9893a5d9923544e5c79982dc7 [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" "4802ba04c099fcb08bb4d85fa9f1be7cf08e61b9893a5d9923544e5c79982dc7", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `volumes` [INFO] [stderr] --> src/grok/waterpouring.rs:40:7 [INFO] [stderr] | [INFO] [stderr] 40 | let volumes: Vec = vec![0, max_volumes.len()]; [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_volumes` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `required_volume` [INFO] [stderr] --> src/grok/waterpouring.rs:39:40 [INFO] [stderr] | [INFO] [stderr] 39 | pub fn solve(max_volumes: &Vec, required_volume: usize) -> State { [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_required_volume` [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Fill` [INFO] [stderr] --> src/grok/waterpouring.rs:5:3 [INFO] [stderr] | [INFO] [stderr] 5 | Fill { glass: usize }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Empty` [INFO] [stderr] --> src/grok/waterpouring.rs:6:3 [INFO] [stderr] | [INFO] [stderr] 6 | Empty { glass: usize }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Transfer` [INFO] [stderr] --> src/grok/waterpouring.rs:7:3 [INFO] [stderr] | [INFO] [stderr] 7 | Transfer { from: usize, to: usize }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `solve` [INFO] [stderr] --> src/grok/waterpouring.rs:39:8 [INFO] [stderr] | [INFO] [stderr] 39 | pub fn solve(max_volumes: &Vec, required_volume: usize) -> State { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 6 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.10s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/grokking_rust-23a17156ac68aa4a [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::test_mergesort ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "4802ba04c099fcb08bb4d85fa9f1be7cf08e61b9893a5d9923544e5c79982dc7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4802ba04c099fcb08bb4d85fa9f1be7cf08e61b9893a5d9923544e5c79982dc7", kill_on_drop: false }` [INFO] [stdout] 4802ba04c099fcb08bb4d85fa9f1be7cf08e61b9893a5d9923544e5c79982dc7