[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 try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaderNoob%2Fnonogram-solver" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MaderNoob/nonogram-solver on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-0/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: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.120
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f87bac1f1cb77028f2e4dae3acc50cb0f10a3e2a4cd1ba291d49889426a6327
[INFO] running `Command { std: "docker" "start" "-a" "9f87bac1f1cb77028f2e4dae3acc50cb0f10a3e2a4cd1ba291d49889426a6327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f87bac1f1cb77028f2e4dae3acc50cb0f10a3e2a4cd1ba291d49889426a6327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f87bac1f1cb77028f2e4dae3acc50cb0f10a3e2a4cd1ba291d49889426a6327", kill_on_drop: false }`
[INFO] [stdout] 9f87bac1f1cb77028f2e4dae3acc50cb0f10a3e2a4cd1ba291d49889426a6327
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02eeda1df4da923662b0b9ce020ab06d04773cd67d6a6ae91eee2d8d988325bc
[INFO] running `Command { std: "docker" "start" "-a" "02eeda1df4da923662b0b9ce020ab06d04773cd67d6a6ae91eee2d8d988325bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]    Compiling serde v1.0.120
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking array2d v0.2.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling quote v1.0.8
[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]     Checking rand v0.6.5
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking websocket-base v0.26.2
[INFO] [stderr]     Checking websocket v0.26.2
[INFO] [stderr]     Checking serde_json v1.0.61
[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`, `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`, `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`, `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`, `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 is never used: `new`
[INFO] [stdout]   --> src/solver.rs:25:12
[INFO] [stdout]    |
[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: associated function is never used: `construct_board_from_columns`
[INFO] [stdout]    --> src/solver.rs:388:8
[INFO] [stdout]     |
[INFO] [stdout] 388 |     fn construct_board_from_columns(&self) -> Array2D<char> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/solver.rs:25:12
[INFO] [stdout]    |
[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: associated function is never used: `construct_board_from_columns`
[INFO] [stdout]    --> src/solver.rs:388:8
[INFO] [stdout]     |
[INFO] [stdout] 388 |     fn construct_board_from_columns(&self) -> Array2D<char> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.45s
[INFO] running `Command { std: "docker" "inspect" "02eeda1df4da923662b0b9ce020ab06d04773cd67d6a6ae91eee2d8d988325bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02eeda1df4da923662b0b9ce020ab06d04773cd67d6a6ae91eee2d8d988325bc", kill_on_drop: false }`
[INFO] [stdout] 02eeda1df4da923662b0b9ce020ab06d04773cd67d6a6ae91eee2d8d988325bc