[INFO] fetching crate wordtop 0.1.6... [INFO] testing wordtop-0.1.6 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1 [INFO] extracting crate wordtop 0.1.6 into /workspace/builds/worker-4-tc1/source [INFO] started tweaking crates.io crate wordtop 0.1.6 [INFO] finished tweaking crates.io crate wordtop 0.1.6 [INFO] tweaked toml for crates.io crate wordtop 0.1.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate wordtop 0.1.6 on toolchain 562dee4820c458d823175268e41601d4c060588a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate wordtop 0.1.6 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ctrlc v3.2.1 [INFO] [stderr] Downloaded nix v0.23.0 [INFO] [stderr] Downloaded libc v0.2.108 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 489de39d700726b5ff0aa76bdcd0ebfe05c1a65053ea0037f572bb7bc4bc292f [INFO] running `Command { std: "docker" "start" "-a" "489de39d700726b5ff0aa76bdcd0ebfe05c1a65053ea0037f572bb7bc4bc292f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "489de39d700726b5ff0aa76bdcd0ebfe05c1a65053ea0037f572bb7bc4bc292f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "489de39d700726b5ff0aa76bdcd0ebfe05c1a65053ea0037f572bb7bc4bc292f", kill_on_drop: false }` [INFO] [stdout] 489de39d700726b5ff0aa76bdcd0ebfe05c1a65053ea0037f572bb7bc4bc292f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3ceef8be083e1deefae0611ed9c544a3ad0c8f7d4757a143708bfeef7fef7b7c [INFO] running `Command { std: "docker" "start" "-a" "3ceef8be083e1deefae0611ed9c544a3ad0c8f7d4757a143708bfeef7fef7b7c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.108 [INFO] [stderr] Compiling unicode-width v0.1.9 [INFO] [stderr] Compiling ansi_term v0.12.1 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling nix v0.23.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.34.0 [INFO] [stderr] Compiling ctrlc v3.2.1 [INFO] [stderr] Compiling wordtop v0.1.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:86:30 [INFO] [stdout] | [INFO] [stdout] 86 | let mut sorted_vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:103:30 [INFO] [stdout] | [INFO] [stdout] 103 | let mut sorted_vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/print.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | count = 0; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.77s [INFO] running `Command { std: "docker" "inspect" "3ceef8be083e1deefae0611ed9c544a3ad0c8f7d4757a143708bfeef7fef7b7c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3ceef8be083e1deefae0611ed9c544a3ad0c8f7d4757a143708bfeef7fef7b7c", kill_on_drop: false }` [INFO] [stdout] 3ceef8be083e1deefae0611ed9c544a3ad0c8f7d4757a143708bfeef7fef7b7c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 41d364ae6edd7f3803b269183075baa56f73600dbc170309684c8af6356b10e2 [INFO] running `Command { std: "docker" "start" "-a" "41d364ae6edd7f3803b269183075baa56f73600dbc170309684c8af6356b10e2", kill_on_drop: false }` [INFO] [stderr] Compiling wordtop v0.1.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:86:30 [INFO] [stdout] | [INFO] [stdout] 86 | let mut sorted_vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `sorted_vec` is never read [INFO] [stdout] --> src/calculate.rs:103:30 [INFO] [stdout] | [INFO] [stdout] 103 | let mut sorted_vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/print.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | count = 0; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/print.rs:76:14 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/print.rs:76:21 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `k` [INFO] [stdout] --> src/print.rs:76:14 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/print.rs:76:21 [INFO] [stdout] | [INFO] [stdout] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.56s [INFO] running `Command { std: "docker" "inspect" "41d364ae6edd7f3803b269183075baa56f73600dbc170309684c8af6356b10e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "41d364ae6edd7f3803b269183075baa56f73600dbc170309684c8af6356b10e2", kill_on_drop: false }` [INFO] [stdout] 41d364ae6edd7f3803b269183075baa56f73600dbc170309684c8af6356b10e2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 5d2c7b8a61be5c720e62db475cc725393ddca2d35a7df8da2ef04d8455c2cc84 [INFO] running `Command { std: "docker" "start" "-a" "5d2c7b8a61be5c720e62db475cc725393ddca2d35a7df8da2ef04d8455c2cc84", kill_on_drop: false }` [INFO] [stderr] warning: value assigned to `sorted_vec` is never read [INFO] [stdout] [INFO] [stderr] --> src/calculate.rs:86:30 [INFO] [stdout] running 3 tests [INFO] [stderr] | [INFO] [stdout] test print::tests::test_print_stats ... ok [INFO] [stderr] 86 | let mut sorted_vec = Vec::new(); [INFO] [stdout] test calculate::tests::test_calculate_rate ... ok [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stdout] test calculate::tests::test_calculate_rate_top ... ok [INFO] [stderr] | [INFO] [stdout] [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] warning: value assigned to `sorted_vec` is never read [INFO] [stderr] --> src/calculate.rs:103:30 [INFO] [stderr] | [INFO] [stderr] 103 | let mut sorted_vec = Vec::new(); [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: value assigned to `count` is never read [INFO] [stderr] --> src/print.rs:21:17 [INFO] [stderr] | [INFO] [stderr] 21 | count = 0; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/print.rs:76:14 [INFO] [stderr] | [INFO] [stderr] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/print.rs:76:21 [INFO] [stderr] | [INFO] [stderr] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `k` [INFO] [stderr] --> src/print.rs:76:14 [INFO] [stderr] | [INFO] [stderr] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_k` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `t` [INFO] [stderr] --> src/print.rs:76:21 [INFO] [stderr] | [INFO] [stderr] 76 | let (mut k, mut t) = print_stats(&x, 10, 10); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stderr] [INFO] [stderr] warning: `wordtop` (bin "wordtop" test) generated 7 warnings (run `cargo fix --bin "wordtop" -p wordtop --tests` to apply 4 suggestions) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/wordtop-ab9c54a6508e5b9a) [INFO] running `Command { std: "docker" "inspect" "5d2c7b8a61be5c720e62db475cc725393ddca2d35a7df8da2ef04d8455c2cc84", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5d2c7b8a61be5c720e62db475cc725393ddca2d35a7df8da2ef04d8455c2cc84", kill_on_drop: false }` [INFO] [stdout] 5d2c7b8a61be5c720e62db475cc725393ddca2d35a7df8da2ef04d8455c2cc84