[INFO] cloning repository https://github.com/flauntingspade4/PNGme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flauntingspade4/PNGme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflauntingspade4%2FPNGme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflauntingspade4%2FPNGme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5af6ea38eb20ad78dd26ed6517597bc794da6c8f
[INFO] checking flauntingspade4/PNGme against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflauntingspade4%2FPNGme" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flauntingspade4/PNGme on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/flauntingspade4/PNGme
[INFO] finished tweaking git repo https://github.com/flauntingspade4/PNGme
[INFO] tweaked toml for git repo https://github.com/flauntingspade4/PNGme written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/flauntingspade4/PNGme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5b2b5cd98cfc52a27a71b59dd5bd6d1c1c4d4bebaaae3080473b1b3e6b1d601
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a5b2b5cd98cfc52a27a71b59dd5bd6d1c1c4d4bebaaae3080473b1b3e6b1d601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5b2b5cd98cfc52a27a71b59dd5bd6d1c1c4d4bebaaae3080473b1b3e6b1d601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5b2b5cd98cfc52a27a71b59dd5bd6d1c1c4d4bebaaae3080473b1b3e6b1d601", kill_on_drop: false }`
[INFO] [stdout] a5b2b5cd98cfc52a27a71b59dd5bd6d1c1c4d4bebaaae3080473b1b3e6b1d601
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] eb7d464d01e93eff71a25b45a36c1470ed09c0b82dc5364ea4b632f19e2fdf01
[INFO] running `Command { std: "docker" "start" "-a" "eb7d464d01e93eff71a25b45a36c1470ed09c0b82dc5364ea4b632f19e2fdf01", kill_on_drop: false }`
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking PNGme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::array::TryFromSliceError`
[INFO] [stdout]  --> src/chunk.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::array::TryFromSliceError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `array::TryFromSliceError`
[INFO] [stdout]  --> src/png.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{array::TryFromSliceError, convert::TryFrom};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::array::TryFromSliceError`
[INFO] [stdout]  --> src/chunk.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::array::TryFromSliceError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `array::TryFromSliceError`
[INFO] [stdout]  --> src/png.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{array::TryFromSliceError, convert::TryFrom};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append_chunk`
[INFO] [stdout]   --> src/png.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn append_chunk(&mut self, chunk: Chunk) {
[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: `remove_chunk`
[INFO] [stdout]   --> src/png.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn remove_chunk(&mut self, chunk_type: &str) -> Option<Chunk> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `chunk_by_type`
[INFO] [stdout]   --> src/png.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn chunk_by_type(&self, chunk_type: &str) -> Option<&Chunk> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "eb7d464d01e93eff71a25b45a36c1470ed09c0b82dc5364ea4b632f19e2fdf01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb7d464d01e93eff71a25b45a36c1470ed09c0b82dc5364ea4b632f19e2fdf01", kill_on_drop: false }`
[INFO] [stdout] eb7d464d01e93eff71a25b45a36c1470ed09c0b82dc5364ea4b632f19e2fdf01