[INFO] fetching crate pngcheck 0.1.1...
[INFO] testing pngcheck-0.1.1 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate pngcheck 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate pngcheck 0.1.1
[INFO] finished tweaking crates.io crate pngcheck 0.1.1
[INFO] tweaked toml for crates.io crate pngcheck 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pngcheck 0.1.1 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pngcheck 0.1.1 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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ea1e415bd089cdde5374a250fe86b0d46090c174eeb69799b8ddf4706a11e17
[INFO] running `Command { std: "docker" "start" "-a" "8ea1e415bd089cdde5374a250fe86b0d46090c174eeb69799b8ddf4706a11e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ea1e415bd089cdde5374a250fe86b0d46090c174eeb69799b8ddf4706a11e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ea1e415bd089cdde5374a250fe86b0d46090c174eeb69799b8ddf4706a11e17", kill_on_drop: false }`
[INFO] [stdout] 8ea1e415bd089cdde5374a250fe86b0d46090c174eeb69799b8ddf4706a11e17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3e588ccd23196ee0d3a162bd111c6ea6d5aa331a83917f3347db9e62920f29a
[INFO] running `Command { std: "docker" "start" "-a" "e3e588ccd23196ee0d3a162bd111c6ea6d5aa331a83917f3347db9e62920f29a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling pngcheck v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `global_max_error` is never read
[INFO] [stdout]     --> src/main.rs:1106:13
[INFO] [stdout]      |
[INFO] [stdout] 1106 |             global_max_error = global_max_error.max(err);
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout]      = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "e3e588ccd23196ee0d3a162bd111c6ea6d5aa331a83917f3347db9e62920f29a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3e588ccd23196ee0d3a162bd111c6ea6d5aa331a83917f3347db9e62920f29a", kill_on_drop: false }`
[INFO] [stdout] e3e588ccd23196ee0d3a162bd111c6ea6d5aa331a83917f3347db9e62920f29a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 940264b6899d93679d033ed0453ce78b36235ccab95f1a345b268dbcf0a96ba4
[INFO] running `Command { std: "docker" "start" "-a" "940264b6899d93679d033ed0453ce78b36235ccab95f1a345b268dbcf0a96ba4", kill_on_drop: false }`
[INFO] [stderr]    Compiling pngcheck v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `global_max_error` is never read
[INFO] [stdout]     --> src/main.rs:1106:13
[INFO] [stdout]      |
[INFO] [stdout] 1106 |             global_max_error = global_max_error.max(err);
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout]      = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "940264b6899d93679d033ed0453ce78b36235ccab95f1a345b268dbcf0a96ba4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "940264b6899d93679d033ed0453ce78b36235ccab95f1a345b268dbcf0a96ba4", kill_on_drop: false }`
[INFO] [stdout] 940264b6899d93679d033ed0453ce78b36235ccab95f1a345b268dbcf0a96ba4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d2e8cfff82c29c9ce31c4fa07b416331a1fb38a556b009576712813dfe0e68ea
[INFO] running `Command { std: "docker" "start" "-a" "d2e8cfff82c29c9ce31c4fa07b416331a1fb38a556b009576712813dfe0e68ea", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `global_max_error` is never read
[INFO] [stderr]     --> src/main.rs:1106:13
[INFO] [stderr]      |
[INFO] [stderr] 1106 |             global_max_error = global_max_error.max(err);
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr]      = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `pngcheck` (bin "pngcheck" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/pngcheck-0a61caaed18ba192)
[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" "d2e8cfff82c29c9ce31c4fa07b416331a1fb38a556b009576712813dfe0e68ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2e8cfff82c29c9ce31c4fa07b416331a1fb38a556b009576712813dfe0e68ea", kill_on_drop: false }`
[INFO] [stdout] d2e8cfff82c29c9ce31c4fa07b416331a1fb38a556b009576712813dfe0e68ea
