[INFO] cloning repository https://github.com/BlockCat/rust-sudoku-solver [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BlockCat/rust-sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlockCat%2Frust-sudoku-solver", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlockCat%2Frust-sudoku-solver'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 90c18645184d65f96d6b5059f06876efaae0fab4 [INFO] checking BlockCat/rust-sudoku-solver/90c18645184d65f96d6b5059f06876efaae0fab4 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlockCat%2Frust-sudoku-solver" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/BlockCat/rust-sudoku-solver on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/BlockCat/rust-sudoku-solver [INFO] finished tweaking git repo https://github.com/BlockCat/rust-sudoku-solver [INFO] tweaked toml for git repo https://github.com/BlockCat/rust-sudoku-solver written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/BlockCat/rust-sudoku-solver 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded z3 v0.3.2 [INFO] [stderr] Downloaded stacker v0.1.5 [INFO] [stderr] Downloaded z3-sys v0.4.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 68df9ef498e8fe630960b223762b9fbbf8616f9cf4e45d58278199a015d11127 [INFO] running `Command { std: "docker" "start" "-a" "68df9ef498e8fe630960b223762b9fbbf8616f9cf4e45d58278199a015d11127", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "68df9ef498e8fe630960b223762b9fbbf8616f9cf4e45d58278199a015d11127", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "68df9ef498e8fe630960b223762b9fbbf8616f9cf4e45d58278199a015d11127", kill_on_drop: false }` [INFO] [stdout] 68df9ef498e8fe630960b223762b9fbbf8616f9cf4e45d58278199a015d11127 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f18522d549c67bdc999965fad696d5f9d2be19e94f53de573ff9eb7f72946ebd [INFO] running `Command { std: "docker" "start" "-a" "f18522d549c67bdc999965fad696d5f9d2be19e94f53de573ff9eb7f72946ebd", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling libc v0.2.54 [INFO] [stderr] Compiling cc v1.0.36 [INFO] [stderr] Checking cfg-if v0.1.7 [INFO] [stderr] Compiling stacker v0.1.5 [INFO] [stderr] Checking sudokusolver v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0635]: unknown feature `vec_remove_item` [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(vec_remove_item)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0635]: unknown feature `vec_remove_item` [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(vec_remove_item)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `remove_item` found for struct `Vec` in the current scope [INFO] [stdout] --> src/lib.rs:123:28 [INFO] [stdout] | [INFO] [stdout] 123 | values.remove_item(&v); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: there is a method `remove` with a similar name [INFO] [stdout] | [INFO] [stdout] 123 | values.remove(&v); [INFO] [stdout] | ~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `remove_item` found for struct `Vec` in the current scope [INFO] [stdout] --> src/lib.rs:123:28 [INFO] [stdout] | [INFO] [stdout] 123 | values.remove_item(&v); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: there is a method `remove` with a similar name [INFO] [stdout] | [INFO] [stdout] 123 | values.remove(&v); [INFO] [stdout] | ~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:37:21 [INFO] [stdout] | [INFO] [stdout] 37 | let mut cell = &mut graph.get_cell_mutable(&CellCoord::new(i , j)); [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/lib.rs:37:21 [INFO] [stdout] | [INFO] [stdout] 37 | let mut cell = &mut graph.get_cell_mutable(&CellCoord::new(i , j)); [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] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0599, E0635. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0599, E0635. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stderr] error: could not compile `sudokusolver` (lib test) due to 3 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `sudokusolver` (lib) due to 3 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "f18522d549c67bdc999965fad696d5f9d2be19e94f53de573ff9eb7f72946ebd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f18522d549c67bdc999965fad696d5f9d2be19e94f53de573ff9eb7f72946ebd", kill_on_drop: false }` [INFO] [stdout] f18522d549c67bdc999965fad696d5f9d2be19e94f53de573ff9eb7f72946ebd