[INFO] cloning repository https://github.com/kimlintu/pngish
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kimlintu/pngish" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkimlintu%2Fpngish", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkimlintu%2Fpngish'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02b955e63f2137975fbcceb2a1d6fb32824016d7
[INFO] testing kimlintu/pngish against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkimlintu%2Fpngish" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kimlintu/pngish
[INFO] finished tweaking git repo https://github.com/kimlintu/pngish
[INFO] tweaked toml for git repo https://github.com/kimlintu/pngish written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kimlintu/pngish on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kimlintu/pngish 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b359badc56b44f65c018d27994de13cc78aa767efff19fcfbe6bfad8d15ab673
[INFO] running `Command { std: "docker" "start" "-a" "b359badc56b44f65c018d27994de13cc78aa767efff19fcfbe6bfad8d15ab673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b359badc56b44f65c018d27994de13cc78aa767efff19fcfbe6bfad8d15ab673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b359badc56b44f65c018d27994de13cc78aa767efff19fcfbe6bfad8d15ab673", kill_on_drop: false }`
[INFO] [stdout] b359badc56b44f65c018d27994de13cc78aa767efff19fcfbe6bfad8d15ab673
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6de558d62ae8c80e1afd4c1d84790c8c82bdfbb0f1794c1d594b8bfd55612b3
[INFO] running `Command { std: "docker" "start" "-a" "f6de558d62ae8c80e1afd4c1d84790c8c82bdfbb0f1794c1d594b8bfd55612b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling deflate v1.0.0
[INFO] [stderr]    Compiling pngish v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut compressed_img_data = deflate::deflate_bytes_zlib(&pixels);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "f6de558d62ae8c80e1afd4c1d84790c8c82bdfbb0f1794c1d594b8bfd55612b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6de558d62ae8c80e1afd4c1d84790c8c82bdfbb0f1794c1d594b8bfd55612b3", kill_on_drop: false }`
[INFO] [stdout] f6de558d62ae8c80e1afd4c1d84790c8c82bdfbb0f1794c1d594b8bfd55612b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a65ef8769de1af29cf71d16fb430c021ff3a4484d2a985d0050261a3a6603a20
[INFO] running `Command { std: "docker" "start" "-a" "a65ef8769de1af29cf71d16fb430c021ff3a4484d2a985d0050261a3a6603a20", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut compressed_img_data = deflate::deflate_bytes_zlib(&pixels);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pngish v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut compressed_img_data = deflate::deflate_bytes_zlib(&pixels);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "a65ef8769de1af29cf71d16fb430c021ff3a4484d2a985d0050261a3a6603a20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a65ef8769de1af29cf71d16fb430c021ff3a4484d2a985d0050261a3a6603a20", kill_on_drop: false }`
[INFO] [stdout] a65ef8769de1af29cf71d16fb430c021ff3a4484d2a985d0050261a3a6603a20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9beb532ff5800b2f58f60ef68eeca933e32f0465e29570f7dedfdf6adcb2619d
[INFO] running `Command { std: "docker" "start" "-a" "9beb532ff5800b2f58f60ef68eeca933e32f0465e29570f7dedfdf6adcb2619d", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] 
[INFO] [stderr]   --> src/lib.rs:86:13
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 86 |         let mut compressed_img_data = deflate::deflate_bytes_zlib(&pixels);
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]    |             |
[INFO] [stdout] 
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: `pngish` (lib) generated 1 warning (run `cargo fix --lib -p pngish` to apply 1 suggestion)
[INFO] [stderr] warning: `pngish` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/pngish-857d2a3b71c89c0d)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/pngish-46aab2c3f1bd8134)
[INFO] [stderr]    Doc-tests pngish
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9beb532ff5800b2f58f60ef68eeca933e32f0465e29570f7dedfdf6adcb2619d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9beb532ff5800b2f58f60ef68eeca933e32f0465e29570f7dedfdf6adcb2619d", kill_on_drop: false }`
[INFO] [stdout] 9beb532ff5800b2f58f60ef68eeca933e32f0465e29570f7dedfdf6adcb2619d