[INFO] fetching crate hex-matrix 0.2.0...
[INFO] checking hex-matrix-0.2.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate hex-matrix 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate hex-matrix 0.2.0
[INFO] finished tweaking crates.io crate hex-matrix 0.2.0
[INFO] tweaked toml for crates.io crate hex-matrix 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hex-matrix 0.2.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate hex-matrix 0.2.0 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39bc8b70a110562a4f7b371f808232d8747efa9d37c6413d64a2b4d3c63d4407
[INFO] running `Command { std: "docker" "start" "-a" "39bc8b70a110562a4f7b371f808232d8747efa9d37c6413d64a2b4d3c63d4407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39bc8b70a110562a4f7b371f808232d8747efa9d37c6413d64a2b4d3c63d4407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39bc8b70a110562a4f7b371f808232d8747efa9d37c6413d64a2b4d3c63d4407", kill_on_drop: false }`
[INFO] [stdout] 39bc8b70a110562a4f7b371f808232d8747efa9d37c6413d64a2b4d3c63d4407
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bec17c8cceb401c2916df52b894efe7b07bfe1f41cd105797dea04e4f05291e
[INFO] running `Command { std: "docker" "start" "-a" "8bec17c8cceb401c2916df52b894efe7b07bfe1f41cd105797dea04e4f05291e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.71
[INFO] [stderr]    Compiling serde_derive v1.0.204
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking hex-matrix v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `default`
[INFO] [stdout]  --> src/matrix.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     default,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/matrix.rs:81:14
[INFO] [stdout]    |
[INFO] [stdout] 81 |         for (i, v) in self.lines.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/matrix.rs:179:21
[INFO] [stdout]     |
[INFO] [stdout] 179 |                 for i in 0..(max_line_number - line_number.to_string().len()) {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let mut max_line_number = String::from(format!("{}", (max_line_count * width))).len();
[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 import: `default`
[INFO] [stdout]  --> src/matrix.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     default,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/matrix.rs:81:14
[INFO] [stdout]    |
[INFO] [stdout] 81 |         for (i, v) in self.lines.iter().enumerate() {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/matrix.rs:179:21
[INFO] [stdout]     |
[INFO] [stdout] 179 |                 for i in 0..(max_line_number - line_number.to_string().len()) {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let mut max_line_number = String::from(format!("{}", (max_line_count * width))).len();
[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 import: `Line`
[INFO] [stdout]  --> examples/main.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use hex_matrix::matrix::{Line, Matrix};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> examples/main.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 |     for (i, v) in lines.iter().enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.13s
[INFO] running `Command { std: "docker" "inspect" "8bec17c8cceb401c2916df52b894efe7b07bfe1f41cd105797dea04e4f05291e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bec17c8cceb401c2916df52b894efe7b07bfe1f41cd105797dea04e4f05291e", kill_on_drop: false }`
[INFO] [stdout] 8bec17c8cceb401c2916df52b894efe7b07bfe1f41cd105797dea04e4f05291e