[INFO] cloning repository https://github.com/NicolenaStiles/rusty_sudoku [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NicolenaStiles/rusty_sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicolenaStiles%2Frusty_sudoku", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicolenaStiles%2Frusty_sudoku'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 93dda9d47e03fc77312af9d3a63b437612a081f2 [INFO] checking NicolenaStiles/rusty_sudoku against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicolenaStiles%2Frusty_sudoku" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/NicolenaStiles/rusty_sudoku [INFO] finished tweaking git repo https://github.com/NicolenaStiles/rusty_sudoku [INFO] tweaked toml for git repo https://github.com/NicolenaStiles/rusty_sudoku written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/NicolenaStiles/rusty_sudoku on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/NicolenaStiles/rusty_sudoku 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 61989a07256be18db0ebb9e06912703f444f044d549d322095866ad6fc1086df [INFO] running `Command { std: "docker" "start" "-a" "61989a07256be18db0ebb9e06912703f444f044d549d322095866ad6fc1086df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "61989a07256be18db0ebb9e06912703f444f044d549d322095866ad6fc1086df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "61989a07256be18db0ebb9e06912703f444f044d549d322095866ad6fc1086df", kill_on_drop: false }` [INFO] [stdout] 61989a07256be18db0ebb9e06912703f444f044d549d322095866ad6fc1086df [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9d0e88c139499bf39b881d3ad3bd694c097429e6f94a5346e45f9e674f2faeab [INFO] running `Command { std: "docker" "start" "-a" "9d0e88c139499bf39b881d3ad3bd694c097429e6f94a5346e45f9e674f2faeab", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.137 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking regex-automata v0.1.10 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking itoa v0.4.8 [INFO] [stderr] Checking getrandom v0.2.8 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking bstr v0.2.17 [INFO] [stderr] Checking csv v1.1.6 [INFO] [stderr] Checking rusty_sudoku v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `rand::Rng` [INFO] [stdout] --> src/Sudoku.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use rand::Rng; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rand::Rng` [INFO] [stdout] --> src/Sudoku.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use rand::Rng; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rusty_sudoku` (bin "rusty_sudoku") due to 2 previous errors; 2 warnings emitted [INFO] [stdout] warning: module `Sudoku` should have a snake case name [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | mod Sudoku; [INFO] [stdout] | ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sudoku` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/Sudoku.rs:92:43 [INFO] [stdout] | [INFO] [stdout] 92 | let diff_field : String = record[1].parse().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rusty_sudoku` (bin "rusty_sudoku" test) due to 2 previous errors; 2 warnings emitted [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/Sudoku.rs:113:43 [INFO] [stdout] | [INFO] [stdout] 113 | let is_started : String = record[3].parse().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: module `Sudoku` should have a snake case name [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | mod Sudoku; [INFO] [stdout] | ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sudoku` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/Sudoku.rs:92:43 [INFO] [stdout] | [INFO] [stdout] 92 | let diff_field : String = record[1].parse().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/Sudoku.rs:113:43 [INFO] [stdout] | [INFO] [stdout] 113 | let is_started : String = record[3].parse().unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "9d0e88c139499bf39b881d3ad3bd694c097429e6f94a5346e45f9e674f2faeab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d0e88c139499bf39b881d3ad3bd694c097429e6f94a5346e45f9e674f2faeab", kill_on_drop: false }` [INFO] [stdout] 9d0e88c139499bf39b881d3ad3bd694c097429e6f94a5346e45f9e674f2faeab