[INFO] cloning repository https://github.com/grussdorian/sudokount_new
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grussdorian/sudokount_new" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrussdorian%2Fsudokount_new", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrussdorian%2Fsudokount_new'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4a44e128f4a89ff703a94488c060b5c07e48829
[INFO] testing grussdorian/sudokount_new against master#414482f6a0d4e7290f614300581a0b55442552a3 for pr-140985
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrussdorian%2Fsudokount_new" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/grussdorian/sudokount_new on toolchain 414482f6a0d4e7290f614300581a0b55442552a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/grussdorian/sudokount_new
[INFO] finished tweaking git repo https://github.com/grussdorian/sudokount_new
[INFO] tweaked toml for git repo https://github.com/grussdorian/sudokount_new written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/grussdorian/sudokount_new 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" "+414482f6a0d4e7290f614300581a0b55442552a3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4ffc014d84a9aa0eba9a820a4ad31d2c2183f8d54ddbeb96eac1293db3467e9
[INFO] running `Command { std: "docker" "start" "-a" "c4ffc014d84a9aa0eba9a820a4ad31d2c2183f8d54ddbeb96eac1293db3467e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4ffc014d84a9aa0eba9a820a4ad31d2c2183f8d54ddbeb96eac1293db3467e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4ffc014d84a9aa0eba9a820a4ad31d2c2183f8d54ddbeb96eac1293db3467e9", kill_on_drop: false }`
[INFO] [stdout] c4ffc014d84a9aa0eba9a820a4ad31d2c2183f8d54ddbeb96eac1293db3467e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 348309f25ba25a1ddf31a157b1aeaea603629faaffdad59300ae5691267a342f
[INFO] running `Command { std: "docker" "start" "-a" "348309f25ba25a1ddf31a157b1aeaea603629faaffdad59300ae5691267a342f", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudokount_new v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> src/sudoku.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sudoku.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 184 |     let mut value = self.get_field(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: unused variable: `min_possibilities`
[INFO] [stdout]    --> src/sudoku.rs:223:13
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let mut min_possibilities = usize::MAX;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_possibilities`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sudoku.rs:223:9
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let mut min_possibilities = usize::MAX;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CellPossibilities` is never constructed
[INFO] [stdout]  --> src/sudoku.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct CellPossibilities{
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `size` and `len` are never read
[INFO] [stdout]   --> src/sudoku.rs:27:3
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct SudokuPeers{
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 27 |   size: usize,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 28 |   len: usize,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `size` is never read
[INFO] [stdout]   --> src/sudoku.rs:77:3
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub struct Sudoku{
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 77 |   size: usize,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Sudoku` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> src/sudoku.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sudoku.rs:184:9
[INFO] [stdout]     |
[INFO] [stdout] 184 |     let mut value = self.get_field(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: unused variable: `min_possibilities`
[INFO] [stdout]    --> src/sudoku.rs:223:13
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let mut min_possibilities = usize::MAX;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_possibilities`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sudoku.rs:223:9
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let mut min_possibilities = usize::MAX;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `changed`
[INFO] [stdout]  --> src/search.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |       Ok(changed) => {
[INFO] [stdout]   |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_changed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `changed`
[INFO] [stdout]   --> src/search.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |             Ok(changed) => {
[INFO] [stdout]    |                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_changed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/search.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Err(err) => {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/search.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Err(err) => {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CellPossibilities` is never constructed
[INFO] [stdout]  --> src/sudoku.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct CellPossibilities{
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `size` and `len` are never read
[INFO] [stdout]   --> src/sudoku.rs:27:3
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct SudokuPeers{
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 27 |   size: usize,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 28 |   len: usize,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `size` is never read
[INFO] [stdout]   --> src/sudoku.rs:77:3
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub struct Sudoku{
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 77 |   size: usize,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Sudoku` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_peers`, `print_peers`, and `print_raw` are never used
[INFO] [stdout]    --> src/sudoku.rs:106:10
[INFO] [stdout]     |
[INFO] [stdout] 87  | impl Sudoku {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 106 |   pub fn get_peers(&self, i: usize, j: usize) -> &Vec<(usize, usize)> {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |   pub fn print_peers(&self) {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |   pub fn print_raw(&self) {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] rustc-LLVM ERROR: IO failure on output stream: No space left on device
[INFO] [stderr] error: could not compile `sudokount_new` (bin "sudokount_new"); 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/414482f6a0d4e7290f614300581a0b55442552a3/bin/rustc --crate-name sudokount_new --edition=2021 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=146f96f69e1fa521 -C extra-filename=-12748c2dbf7f95c6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern sudokount_new=/opt/rustwide/target/debug/deps/libsudokount_new-535439be1f3ef10d.rlib --cap-lints=forbid` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "348309f25ba25a1ddf31a157b1aeaea603629faaffdad59300ae5691267a342f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "348309f25ba25a1ddf31a157b1aeaea603629faaffdad59300ae5691267a342f", kill_on_drop: false }`
[INFO] [stdout] 348309f25ba25a1ddf31a157b1aeaea603629faaffdad59300ae5691267a342f