[INFO] updating cached repository chc4/minesweeper [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/chc4/minesweeper [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/chc4/minesweeper" "work/ex/beta-1.38-1/sources/1.37.0/gh/chc4/minesweeper"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/chc4/minesweeper'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/chc4/minesweeper" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chc4/minesweeper"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chc4/minesweeper'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] ce5b54dc6901a490016be5f90e230e990ddbb2cd [INFO] sha for GitHub repo chc4/minesweeper: ce5b54dc6901a490016be5f90e230e990ddbb2cd [INFO] validating manifest of chc4/minesweeper on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of chc4/minesweeper on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing chc4/minesweeper [INFO] finished frobbing chc4/minesweeper [INFO] frobbed toml for chc4/minesweeper written to work/ex/beta-1.38-1/sources/1.37.0/gh/chc4/minesweeper/Cargo.toml [INFO] started frobbing chc4/minesweeper [INFO] finished frobbing chc4/minesweeper [INFO] frobbed toml for chc4/minesweeper written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chc4/minesweeper/Cargo.toml [INFO] crate chc4/minesweeper already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing chc4/minesweeper against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chc4/minesweeper:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] 814cf873997c5df8fd9de4365e128696d7f40370e75ce0d459278e4ec0274e56 [INFO] running `"docker" "start" "-a" "814cf873997c5df8fd9de4365e128696d7f40370e75ce0d459278e4ec0274e56"` [INFO] [stderr] Compiling minesweeper v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/main.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:24:57 [INFO] [stderr] | [INFO] [stderr] 24 | fn read_input(message: &'static str) -> Result> [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:182:28 [INFO] [stderr] | [INFO] [stderr] 182 | fn main() -> Result<(),Box> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `stdin` [INFO] [stderr] --> src/main.rs:183:9 [INFO] [stderr] | [INFO] [stderr] 183 | let stdin = std::io::stdin(); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_stdin` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:56:13 [INFO] [stderr] | [INFO] [stderr] 56 | for i in 0..y { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `j` [INFO] [stderr] --> src/main.rs:58:17 [INFO] [stderr] | [INFO] [stderr] 58 | for j in 0..x { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_j` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `count` [INFO] [stderr] --> src/main.rs:108:36 [INFO] [stderr] | [INFO] [stderr] 108 | if let Slot::Empty(visible,count) = slot { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_count` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:30:9 [INFO] [stderr] | [INFO] [stderr] 30 | let mut stdin = std::io::stdin(); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.77s [INFO] running `"docker" "inspect" "814cf873997c5df8fd9de4365e128696d7f40370e75ce0d459278e4ec0274e56"` [INFO] running `"docker" "rm" "-f" "814cf873997c5df8fd9de4365e128696d7f40370e75ce0d459278e4ec0274e56"` [INFO] [stdout] 814cf873997c5df8fd9de4365e128696d7f40370e75ce0d459278e4ec0274e56 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chc4/minesweeper:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] cf3013c2266cc617020f44b65883f600d9f7cf3e15299be5c0eb1e290aa3da2d [INFO] running `"docker" "start" "-a" "cf3013c2266cc617020f44b65883f600d9f7cf3e15299be5c0eb1e290aa3da2d"` [INFO] [stderr] Compiling minesweeper v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::io` [INFO] [stderr] --> src/main.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::io; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:24:57 [INFO] [stderr] | [INFO] [stderr] 24 | fn read_input(message: &'static str) -> Result> [INFO] [stderr] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:182:28 [INFO] [stderr] | [INFO] [stderr] 182 | fn main() -> Result<(),Box> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `stdin` [INFO] [stderr] --> src/main.rs:183:9 [INFO] [stderr] | [INFO] [stderr] 183 | let stdin = std::io::stdin(); [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_stdin` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:56:13 [INFO] [stderr] | [INFO] [stderr] 56 | for i in 0..y { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `j` [INFO] [stderr] --> src/main.rs:58:17 [INFO] [stderr] | [INFO] [stderr] 58 | for j in 0..x { [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_j` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `count` [INFO] [stderr] --> src/main.rs:108:36 [INFO] [stderr] | [INFO] [stderr] 108 | if let Slot::Empty(visible,count) = slot { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_count` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:30:9 [INFO] [stderr] | [INFO] [stderr] 30 | let mut stdin = std::io::stdin(); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.97s [INFO] running `"docker" "inspect" "cf3013c2266cc617020f44b65883f600d9f7cf3e15299be5c0eb1e290aa3da2d"` [INFO] running `"docker" "rm" "-f" "cf3013c2266cc617020f44b65883f600d9f7cf3e15299be5c0eb1e290aa3da2d"` [INFO] [stdout] cf3013c2266cc617020f44b65883f600d9f7cf3e15299be5c0eb1e290aa3da2d [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chc4/minesweeper:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] 2ac760153b8f601550b60124c4e91a158a8ad20b7be76d01b8352bcff356a59f [INFO] running `"docker" "start" "-a" "2ac760153b8f601550b60124c4e91a158a8ad20b7be76d01b8352bcff356a59f"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/minesweeper-defb587a6832bc35 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "2ac760153b8f601550b60124c4e91a158a8ad20b7be76d01b8352bcff356a59f"` [INFO] running `"docker" "rm" "-f" "2ac760153b8f601550b60124c4e91a158a8ad20b7be76d01b8352bcff356a59f"` [INFO] [stdout] 2ac760153b8f601550b60124c4e91a158a8ad20b7be76d01b8352bcff356a59f