[INFO] cloning repository https://github.com/MaderNoob/nonogram-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MaderNoob/nonogram-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaderNoob%2Fnonogram-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaderNoob%2Fnonogram-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89884cfc9f60e19a3e2c2202b2d7252b49643e55
[INFO] checking MaderNoob/nonogram-solver against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaderNoob%2Fnonogram-solver" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MaderNoob/nonogram-solver on toolchain cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MaderNoob/nonogram-solver
[INFO] finished tweaking git repo https://github.com/MaderNoob/nonogram-solver
[INFO] tweaked toml for git repo https://github.com/MaderNoob/nonogram-solver written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MaderNoob/nonogram-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" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded byteorder v1.4.2
[INFO] [stderr]   Downloaded log v0.4.13
[INFO] [stderr]   Downloaded array2d v0.2.1
[INFO] [stderr]   Downloaded websocket v0.26.2
[INFO] [stderr]   Downloaded websocket-base v0.26.2
[INFO] [stderr]   Downloaded serde_derive v1.0.120
[INFO] [stderr]   Downloaded serde v1.0.120
[INFO] [stderr]   Downloaded syn v1.0.58
[INFO] [stderr]   Downloaded libc v0.2.82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 479ab7fb0a4c5d09a47438af5f5df5de7a0dea428f243294468ce626a94452e8
[INFO] running `Command { std: "docker" "start" "-a" "479ab7fb0a4c5d09a47438af5f5df5de7a0dea428f243294468ce626a94452e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "479ab7fb0a4c5d09a47438af5f5df5de7a0dea428f243294468ce626a94452e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "479ab7fb0a4c5d09a47438af5f5df5de7a0dea428f243294468ce626a94452e8", kill_on_drop: false }`
[INFO] [stdout] 479ab7fb0a4c5d09a47438af5f5df5de7a0dea428f243294468ce626a94452e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6961a6617dd5ead7f0d476b7f835cce151b1eb76057e45274ba3a2b6dfecb7c8
[INFO] running `Command { std: "docker" "start" "-a" "6961a6617dd5ead7f0d476b7f835cce151b1eb76057e45274ba3a2b6dfecb7c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking tinyvec v1.1.0
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[INFO] [stderr]    Compiling serde v1.0.120
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[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking digest v0.8.1
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[INFO] [stderr]     Checking first_try v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::panic`
[INFO] [stdout]  --> src/solver.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::panic;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpListener` and `io::Read`
[INFO] [stdout]  --> src/solver.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::Read,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     net::{TcpListener, TcpStream},
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::__private::ser`
[INFO] [stdout]  --> src/solver.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::__private::ser;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Server` and `server::NoTlsAcceptor`
[INFO] [stdout]   --> src/solver.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     server::NoTlsAcceptor,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 11 |     sync::{Client, Server},
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::panic`
[INFO] [stdout]  --> src/solver.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::panic;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpListener` and `io::Read`
[INFO] [stdout]  --> src/solver.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::Read,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     net::{TcpListener, TcpStream},
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::__private::ser`
[INFO] [stdout]  --> src/solver.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::__private::ser;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Server` and `server::NoTlsAcceptor`
[INFO] [stdout]   --> src/solver.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     server::NoTlsAcceptor,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 11 |     sync::{Client, Server},
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/solver.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl ColumnBlockState {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn new() -> ColumnBlockState {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `construct_board_from_columns` is never used
[INFO] [stdout]    --> src/solver.rs:388:8
[INFO] [stdout]     |
[INFO] [stdout] 206 | impl PuzzleSolver {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 388 |     fn construct_board_from_columns(&self) -> Array2D<char> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/solver.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl ColumnBlockState {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn new() -> ColumnBlockState {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `construct_board_from_columns` is never used
[INFO] [stdout]    --> src/solver.rs:388:8
[INFO] [stdout]     |
[INFO] [stdout] 206 | impl PuzzleSolver {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 388 |     fn construct_board_from_columns(&self) -> Array2D<char> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.29s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "6961a6617dd5ead7f0d476b7f835cce151b1eb76057e45274ba3a2b6dfecb7c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6961a6617dd5ead7f0d476b7f835cce151b1eb76057e45274ba3a2b6dfecb7c8", kill_on_drop: false }`
[INFO] [stdout] 6961a6617dd5ead7f0d476b7f835cce151b1eb76057e45274ba3a2b6dfecb7c8