[INFO] cloning repository https://github.com/kinn00kinn/Minesweeper_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kinn00kinn/Minesweeper_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkinn00kinn%2FMinesweeper_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkinn00kinn%2FMinesweeper_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 06fa0f379192827add132f3ed914524e5c51e131
[INFO] building kinn00kinn/Minesweeper_rust against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkinn00kinn%2FMinesweeper_rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kinn00kinn/Minesweeper_rust on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kinn00kinn/Minesweeper_rust
[INFO] finished tweaking git repo https://github.com/kinn00kinn/Minesweeper_rust
[INFO] tweaked toml for git repo https://github.com/kinn00kinn/Minesweeper_rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kinn00kinn/Minesweeper_rust 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b22548bb5720e2733f95025071ccacc5f67c157ffb8d0213e4cbea4472835295
[INFO] running `Command { std: "docker" "start" "-a" "b22548bb5720e2733f95025071ccacc5f67c157ffb8d0213e4cbea4472835295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b22548bb5720e2733f95025071ccacc5f67c157ffb8d0213e4cbea4472835295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b22548bb5720e2733f95025071ccacc5f67c157ffb8d0213e4cbea4472835295", kill_on_drop: false }`
[INFO] [stdout] b22548bb5720e2733f95025071ccacc5f67c157ffb8d0213e4cbea4472835295
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b99e15b0ee6a68ec7535f00bd5a5a52f394458b0d33cec31532adbe66af3387b
[INFO] running `Command { std: "docker" "start" "-a" "b99e15b0ee6a68ec7535f00bd5a5a52f394458b0d33cec31532adbe66af3387b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling smallvec v1.13.1
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling signal-hook-mio v0.2.3
[INFO] [stderr]    Compiling crossterm v0.20.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rust_train v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `offset` is never read
[INFO] [stdout]    --> src/main.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         offset = (offset + 1) % 4;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `H` should have a snake case name
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     H: usize,
[INFO] [stdout]   |     ^ help: convert the identifier to snake case: `h`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `W` should have a snake case name
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     W: usize,
[INFO] [stdout]   |     ^ help: convert the identifier to snake case (notice the capitalization): `w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `V` should have a snake case name
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     V: Vec<Vec<i32>>,
[INFO] [stdout]   |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `S` should have a snake case name
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     S: Vec<Vec<i32>>,
[INFO] [stdout]   |     ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `H` should have a snake case name
[INFO] [stdout]   --> src/main.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(H: usize, W: usize) -> Board {
[INFO] [stdout]    |            ^ help: convert the identifier to snake case: `h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W` should have a snake case name
[INFO] [stdout]   --> src/main.rs:13:22
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(H: usize, W: usize) -> Board {
[INFO] [stdout]    |                      ^ help: convert the identifier to snake case (notice the capitalization): `w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `Command { std: "docker" "inspect" "b99e15b0ee6a68ec7535f00bd5a5a52f394458b0d33cec31532adbe66af3387b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b99e15b0ee6a68ec7535f00bd5a5a52f394458b0d33cec31532adbe66af3387b", kill_on_drop: false }`
[INFO] [stdout] b99e15b0ee6a68ec7535f00bd5a5a52f394458b0d33cec31532adbe66af3387b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d49641833b1a3f5f58ad3a88b9bd291004c305bc32f117b3caacb4243f453dc
[INFO] running `Command { std: "docker" "start" "-a" "0d49641833b1a3f5f58ad3a88b9bd291004c305bc32f117b3caacb4243f453dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_train v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `offset` is never read
[INFO] [stdout]    --> src/main.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         offset = (offset + 1) % 4;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `H` should have a snake case name
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     H: usize,
[INFO] [stdout]   |     ^ help: convert the identifier to snake case: `h`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `W` should have a snake case name
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     W: usize,
[INFO] [stdout]   |     ^ help: convert the identifier to snake case (notice the capitalization): `w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `V` should have a snake case name
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     V: Vec<Vec<i32>>,
[INFO] [stdout]   |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `S` should have a snake case name
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     S: Vec<Vec<i32>>,
[INFO] [stdout]   |     ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `H` should have a snake case name
[INFO] [stdout]   --> src/main.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(H: usize, W: usize) -> Board {
[INFO] [stdout]    |            ^ help: convert the identifier to snake case: `h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W` should have a snake case name
[INFO] [stdout]   --> src/main.rs:13:22
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn new(H: usize, W: usize) -> Board {
[INFO] [stdout]    |                      ^ help: convert the identifier to snake case (notice the capitalization): `w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "0d49641833b1a3f5f58ad3a88b9bd291004c305bc32f117b3caacb4243f453dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d49641833b1a3f5f58ad3a88b9bd291004c305bc32f117b3caacb4243f453dc", kill_on_drop: false }`
[INFO] [stdout] 0d49641833b1a3f5f58ad3a88b9bd291004c305bc32f117b3caacb4243f453dc