[INFO] cloning repository https://github.com/neal-o-r/rust-scrabble [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/neal-o-r/rust-scrabble" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneal-o-r%2Frust-scrabble", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneal-o-r%2Frust-scrabble'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4e20da62df8e873b1300cad0ccb9c5e121952900 [INFO] checking neal-o-r/rust-scrabble against master#6f40082313d8374bdf962aba943a712d5322fae6 for pr-117967 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneal-o-r%2Frust-scrabble" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/neal-o-r/rust-scrabble on toolchain 6f40082313d8374bdf962aba943a712d5322fae6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6f40082313d8374bdf962aba943a712d5322fae6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/neal-o-r/rust-scrabble [INFO] finished tweaking git repo https://github.com/neal-o-r/rust-scrabble [INFO] tweaked toml for git repo https://github.com/neal-o-r/rust-scrabble written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/neal-o-r/rust-scrabble 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" "+6f40082313d8374bdf962aba943a712d5322fae6" "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 [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking neal-o-r/rust-scrabble against try#57fd74335bb14b59b719dc3cc5bc4257e73f33ce for pr-117967 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fneal-o-r%2Frust-scrabble" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/neal-o-r/rust-scrabble on toolchain 57fd74335bb14b59b719dc3cc5bc4257e73f33ce [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/neal-o-r/rust-scrabble [INFO] finished tweaking git repo https://github.com/neal-o-r/rust-scrabble [INFO] tweaked toml for git repo https://github.com/neal-o-r/rust-scrabble written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/neal-o-r/rust-scrabble 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" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3f06c7463f7d3fdde1e04f6a7b8079217cfaf79314d96ee4d545ef29ae9e02e2 [INFO] running `Command { std: "docker" "start" "-a" "3f06c7463f7d3fdde1e04f6a7b8079217cfaf79314d96ee4d545ef29ae9e02e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3f06c7463f7d3fdde1e04f6a7b8079217cfaf79314d96ee4d545ef29ae9e02e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3f06c7463f7d3fdde1e04f6a7b8079217cfaf79314d96ee4d545ef29ae9e02e2", kill_on_drop: false }` [INFO] [stdout] 3f06c7463f7d3fdde1e04f6a7b8079217cfaf79314d96ee4d545ef29ae9e02e2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fd74335bb14b59b719dc3cc5bc4257e73f33ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 444eaae09eee3e67b42108e3a930bbf8c48bf467298ce1d4b96e797906673b56 [INFO] running `Command { std: "docker" "start" "-a" "444eaae09eee3e67b42108e3a930bbf8c48bf467298ce1d4b96e797906673b56", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling serde v1.0.132 [INFO] [stderr] Checking ppv-lite86 v0.2.16 [INFO] [stderr] Checking ryu v1.0.9 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking encode_unicode v0.3.6 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking dirs v1.0.5 [INFO] [stderr] Checking colored v2.0.0 [INFO] [stderr] Checking term v0.5.2 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking bstr v0.2.17 [INFO] [stderr] Checking csv v1.1.6 [INFO] [stderr] Checking prettytable-rs v0.8.0 [INFO] [stderr] Checking scrabble v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::cmp` [INFO] [stdout] --> src/racks.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::cmp; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/score.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cmp` [INFO] [stdout] --> src/racks.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::cmp; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/score.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/plays.rs:58:16 [INFO] [stdout] | [INFO] [stdout] 58 | mut plays: &mut Vec) -> () { [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: variable does not need to be mutable [INFO] [stdout] --> src/plays.rs:58:16 [INFO] [stdout] | [INFO] [stdout] 58 | mut plays: &mut Vec) -> () { [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: variable does not need to be mutable [INFO] [stdout] --> src/racks.rs:61:32 [INFO] [stdout] | [INFO] [stdout] 61 | rack: &str, mut results: &mut HashSet) { [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/racks.rs:61:32 [INFO] [stdout] | [INFO] [stdout] 61 | rack: &str, mut results: &mut HashSet) { [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/score.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | Err(e) => 0 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/score.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | Err(e) => 0 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/score.rs:32:19 [INFO] [stdout] | [INFO] [stdout] 32 | fn letters_played(b: &Board, p: &Play) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/score.rs:32:19 [INFO] [stdout] | [INFO] [stdout] 32 | fn letters_played(b: &Board, p: &Play) -> i32 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `word` is assigned to, but never used [INFO] [stdout] --> src/score.rs:73:13 [INFO] [stdout] | [INFO] [stdout] 73 | let mut word = 1; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_word` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `word` is assigned to, but never used [INFO] [stdout] --> src/score.rs:73:13 [INFO] [stdout] | [INFO] [stdout] 73 | let mut word = 1; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_word` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `across` and `down` are never read [INFO] [stdout] --> src/board.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 22 | pub struct Board { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 23 | pub board: Vec, [INFO] [stdout] 24 | across: isize, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 25 | down: isize, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Board` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `across` and `down` are never read [INFO] [stdout] --> src/board.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 22 | pub struct Board { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 23 | pub board: Vec, [INFO] [stdout] 24 | across: isize, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 25 | down: isize, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Board` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.50s [INFO] running `Command { std: "docker" "inspect" "444eaae09eee3e67b42108e3a930bbf8c48bf467298ce1d4b96e797906673b56", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "444eaae09eee3e67b42108e3a930bbf8c48bf467298ce1d4b96e797906673b56", kill_on_drop: false }` [INFO] [stdout] 444eaae09eee3e67b42108e3a930bbf8c48bf467298ce1d4b96e797906673b56