[INFO] fetching crate asciigraph 0.9.3...
[INFO] checking asciigraph-0.9.3 against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] extracting crate asciigraph 0.9.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate asciigraph 0.9.3 on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate asciigraph 0.9.3
[INFO] finished tweaking crates.io crate asciigraph 0.9.3
[INFO] tweaked toml for crates.io crate asciigraph 0.9.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded asciibox v0.1.0
[INFO] [stderr]   Downloaded json v0.12.4
[INFO] [stderr]   Downloaded hmath v0.1.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c807806231be3b6e9b152369d4d1b1d488693274dd8cb80761255bab68e7f1ed
[INFO] running `Command { std: "docker" "start" "-a" "c807806231be3b6e9b152369d4d1b1d488693274dd8cb80761255bab68e7f1ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c807806231be3b6e9b152369d4d1b1d488693274dd8cb80761255bab68e7f1ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c807806231be3b6e9b152369d4d1b1d488693274dd8cb80761255bab68e7f1ed", kill_on_drop: false }`
[INFO] [stdout] c807806231be3b6e9b152369d4d1b1d488693274dd8cb80761255bab68e7f1ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31f248353acef43874e24f2488e61cbd34732526ec7202e852a194bedb249b87
[INFO] running `Command { std: "docker" "start" "-a" "31f248353acef43874e24f2488e61cbd34732526ec7202e852a194bedb249b87", kill_on_drop: false }`
[INFO] [stderr]     Checking asciibox v0.1.0
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking hmath v0.1.17
[INFO] [stderr]     Checking asciigraph v0.9.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/graph.rs:272:13
[INFO] [stdout]     |
[INFO] [stdout] 272 |         let mut y_labels_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: variable does not need to be mutable
[INFO] [stdout]    --> src/graph.rs:272:13
[INFO] [stdout]     |
[INFO] [stdout] 272 |         let mut y_labels_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: struct `Table` is never constructed
[INFO] [stdout]  --> src/table.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Table {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_rect` is never used
[INFO] [stdout]    --> src/table.rs:206:8
[INFO] [stdout]     |
[INFO] [stdout] 22  | impl Table {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 206 |     fn get_rect(&self, col: usize, row: usize) -> (usize, usize, usize, usize) {  // (x, y, w, h)
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cell` is never constructed
[INFO] [stdout]    --> src/table.rs:224:12
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub struct Cell {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Table` is never constructed
[INFO] [stdout]  --> src/table.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Table {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_rect` is never used
[INFO] [stdout]    --> src/table.rs:206:8
[INFO] [stdout]     |
[INFO] [stdout] 22  | impl Table {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 206 |     fn get_rect(&self, col: usize, row: usize) -> (usize, usize, usize, usize) {  // (x, y, w, h)
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cell` is never constructed
[INFO] [stdout]    --> src/table.rs:224:12
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub struct Cell {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "31f248353acef43874e24f2488e61cbd34732526ec7202e852a194bedb249b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f248353acef43874e24f2488e61cbd34732526ec7202e852a194bedb249b87", kill_on_drop: false }`
[INFO] [stdout] 31f248353acef43874e24f2488e61cbd34732526ec7202e852a194bedb249b87
