[INFO] cloning repository https://github.com/coopersimon/RustSudokuSolver [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/coopersimon/RustSudokuSolver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoopersimon%2FRustSudokuSolver", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoopersimon%2FRustSudokuSolver'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 625478f44e697554545f1298cc703089843a1cb1 [INFO] checking coopersimon/RustSudokuSolver against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoopersimon%2FRustSudokuSolver" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/coopersimon/RustSudokuSolver on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/coopersimon/RustSudokuSolver [INFO] finished tweaking git repo https://github.com/coopersimon/RustSudokuSolver [INFO] tweaked toml for git repo https://github.com/coopersimon/RustSudokuSolver written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/coopersimon/RustSudokuSolver already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] eed7a35ea1485233242445451c4933ea1c7ae818729b3d93958947ded70308a9 [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" "eed7a35ea1485233242445451c4933ea1c7ae818729b3d93958947ded70308a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "eed7a35ea1485233242445451c4933ea1c7ae818729b3d93958947ded70308a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eed7a35ea1485233242445451c4933ea1c7ae818729b3d93958947ded70308a9", kill_on_drop: false }` [INFO] [stdout] eed7a35ea1485233242445451c4933ea1c7ae818729b3d93958947ded70308a9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 63f6d0ca7f226e4e9cd49163bcd7c9f60824f304d8c9e589a88a151735eaaab2 [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" "63f6d0ca7f226e4e9cd49163bcd7c9f60824f304d8c9e589a88a151735eaaab2", kill_on_drop: false }` [INFO] [stderr] Checking sudoku_solver v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:187:28 [INFO] [stdout] | [INFO] [stdout] 187 | let mut input_file = try!(File::open(file_name).map_err(|e| e.to_string())); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:189:7 [INFO] [stdout] | [INFO] [stdout] 189 | try!(input_file.read_to_string(&mut file_contents).map_err(|e| e.to_string())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:187:28 [INFO] [stdout] | [INFO] [stdout] 187 | let mut input_file = try!(File::open(file_name).map_err(|e| e.to_string())); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:189:7 [INFO] [stdout] | [INFO] [stdout] 189 | try!(input_file.read_to_string(&mut file_contents).map_err(|e| e.to_string())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.46s [INFO] running `Command { std: "docker" "inspect" "63f6d0ca7f226e4e9cd49163bcd7c9f60824f304d8c9e589a88a151735eaaab2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "63f6d0ca7f226e4e9cd49163bcd7c9f60824f304d8c9e589a88a151735eaaab2", kill_on_drop: false }` [INFO] [stdout] 63f6d0ca7f226e4e9cd49163bcd7c9f60824f304d8c9e589a88a151735eaaab2