[INFO] fetching crate png 0.18.0-rc.2...
[INFO] testing png-0.18.0-rc.2 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate png 0.18.0-rc.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate png 0.18.0-rc.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate png 0.18.0-rc.2
[INFO] tweaked toml for crates.io crate png 0.18.0-rc.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate png 0.18.0-rc.2 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate png 0.18.0-rc.2 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab85dbc0f4a7231622b922c9b8acbf4c948a6d48ebaac00c549ec29e081359ba
[INFO] running `Command { std: "docker" "start" "-a" "ab85dbc0f4a7231622b922c9b8acbf4c948a6d48ebaac00c549ec29e081359ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab85dbc0f4a7231622b922c9b8acbf4c948a6d48ebaac00c549ec29e081359ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab85dbc0f4a7231622b922c9b8acbf4c948a6d48ebaac00c549ec29e081359ba", kill_on_drop: false }`
[INFO] [stdout] ab85dbc0f4a7231622b922c9b8acbf4c948a6d48ebaac00c549ec29e081359ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d32f46e495335e8727d0d41e184704e48ffbc2c900ae3cf537020b704febac8d
[INFO] running `Command { std: "docker" "start" "-a" "d32f46e495335e8727d0d41e184704e48ffbc2c900ae3cf537020b704febac8d", kill_on_drop: false }`
[INFO] [stderr] Compiling crc32fast v1.3.2
[INFO] [stderr] Compiling simd-adler32 v0.3.7
[INFO] [stderr] Compiling adler2 v2.0.0
[INFO] [stderr] Compiling miniz_oxide v0.8.8
[INFO] [stderr] Compiling fdeflate v0.3.7
[INFO] [stderr] Compiling flate2 v1.1.1
[INFO] [stderr] Compiling png v0.18.0-rc.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout] --> src/decoder/mod.rs:485:21
[INFO] [stdout] |
[INFO] [stdout] 485 | pub fn next_row(&mut self) -> Result