[INFO] fetching crate png-to-twmap 0.4.2...
[INFO] testing png-to-twmap-0.4.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate png-to-twmap 0.4.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate png-to-twmap 0.4.2
[INFO] finished tweaking crates.io crate png-to-twmap 0.4.2
[INFO] tweaked toml for crates.io crate png-to-twmap 0.4.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate png-to-twmap 0.4.2 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate png-to-twmap 0.4.2 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" "+beta-2025-09-21" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77b06885cf9cf8667e59609e58f27cd349de6d910870461cf3e36853c36736af
[INFO] running `Command { std: "docker" "start" "-a" "77b06885cf9cf8667e59609e58f27cd349de6d910870461cf3e36853c36736af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77b06885cf9cf8667e59609e58f27cd349de6d910870461cf3e36853c36736af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b06885cf9cf8667e59609e58f27cd349de6d910870461cf3e36853c36736af", kill_on_drop: false }`
[INFO] [stdout] 77b06885cf9cf8667e59609e58f27cd349de6d910870461cf3e36853c36736af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91e6ee051db8d29416c1ef9386691095213fab3e3411858df4f3db4c05e85d38
[INFO] running `Command { std: "docker" "start" "-a" "91e6ee051db8d29416c1ef9386691095213fab3e3411858df4f3db4c05e85d38", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.81
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling cc v1.0.94
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling serde v1.0.198
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling miniz_oxide v0.7.2
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]    Compiling built v0.7.2
[INFO] [stderr]    Compiling arrayvec v0.7.4
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling rav1e v0.7.1
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling fdeflate v0.3.4
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling anstyle v1.0.6
[INFO] [stderr]    Compiling serde_json v1.0.116
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling vek v0.16.1
[INFO] [stderr]    Compiling bitstream-io v2.2.0
[INFO] [stderr]    Compiling imgref v1.10.1
[INFO] [stderr]    Compiling syn v2.0.60
[INFO] [stderr]    Compiling fixed v1.27.0
[INFO] [stderr]    Compiling anstream v0.6.13
[INFO] [stderr]    Compiling avif-serialize v0.8.1
[INFO] [stderr]    Compiling loop9 v0.1.5
[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]    Compiling flume v0.11.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling clap_lex v0.7.0
[INFO] [stderr]    Compiling zune-jpeg v0.4.11
[INFO] [stderr]    Compiling getrandom v0.2.14
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling opus_headers v0.1.2
[INFO] [stderr]    Compiling clap_builder v4.5.2
[INFO] [stderr]    Compiling libz-sys v1.1.16
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling v_frame v0.3.8
[INFO] [stderr]    Compiling num-complex v0.4.5
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling flate2 v1.0.28
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling exr v1.72.0
[INFO] [stderr]    Compiling png v0.17.13
[INFO] [stderr]    Compiling tiff v0.9.1
[INFO] [stderr]    Compiling structview_derive v1.1.0
[INFO] [stderr]    Compiling av1-grain v0.2.3
[INFO] [stderr]    Compiling structview v1.1.0
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling sanitize-filename v0.5.0
[INFO] [stderr]    Compiling maybe-rayon v0.1.1
[INFO] [stderr]    Compiling bytemuck_derive v1.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.198
[INFO] [stderr]    Compiling profiling-procmacros v1.0.15
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling clap_derive v4.5.4
[INFO] [stderr]    Compiling profiling v1.0.15
[INFO] [stderr]    Compiling bytemuck v1.15.0
[INFO] [stderr]    Compiling rgb v0.8.37
[INFO] [stderr]    Compiling qoi v0.4.1
[INFO] [stderr]    Compiling image v0.24.9
[INFO] [stderr]    Compiling clap v4.5.4
[INFO] [stderr]    Compiling image-webp v0.1.2
[INFO] [stderr]    Compiling kdtree v0.7.0
[INFO] [stderr]    Compiling rsn v0.1.0
[INFO] [stderr]    Compiling ravif v0.11.5
[INFO] [stderr]    Compiling image v0.25.1
[INFO] [stderr]    Compiling twmap v0.12.0
[INFO] [stderr]    Compiling png-to-twmap v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Mapping` is never constructed
[INFO] [stdout]    --> src/main.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | struct Mapping {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "91e6ee051db8d29416c1ef9386691095213fab3e3411858df4f3db4c05e85d38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91e6ee051db8d29416c1ef9386691095213fab3e3411858df4f3db4c05e85d38", kill_on_drop: false }`
[INFO] [stdout] 91e6ee051db8d29416c1ef9386691095213fab3e3411858df4f3db4c05e85d38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9855ba57b5bca3f313e7755737b4957ec151913d4c975283fde508560d9c2bc2
[INFO] running `Command { std: "docker" "start" "-a" "9855ba57b5bca3f313e7755737b4957ec151913d4c975283fde508560d9c2bc2", kill_on_drop: false }`
[INFO] [stderr]    Compiling png-to-twmap v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Mapping` is never constructed
[INFO] [stdout]    --> src/main.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | struct Mapping {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "9855ba57b5bca3f313e7755737b4957ec151913d4c975283fde508560d9c2bc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9855ba57b5bca3f313e7755737b4957ec151913d4c975283fde508560d9c2bc2", kill_on_drop: false }`
[INFO] [stdout] 9855ba57b5bca3f313e7755737b4957ec151913d4c975283fde508560d9c2bc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e93a451550ee7f91f22ed657c736a07b5ff8f4e63a9c29b7021e44fc6c0fa20f
[INFO] running `Command { std: "docker" "start" "-a" "e93a451550ee7f91f22ed657c736a07b5ff8f4e63a9c29b7021e44fc6c0fa20f", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Mapping` is never constructed
[INFO] [stderr]    --> src/main.rs:131:8
[INFO] [stderr]     |
[INFO] [stderr] 131 | struct Mapping {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `png-to-twmap` (bin "png-to-twmap" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/png_to_twmap-c36667b3816eda86)
[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" "e93a451550ee7f91f22ed657c736a07b5ff8f4e63a9c29b7021e44fc6c0fa20f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e93a451550ee7f91f22ed657c736a07b5ff8f4e63a9c29b7021e44fc6c0fa20f", kill_on_drop: false }`
[INFO] [stdout] e93a451550ee7f91f22ed657c736a07b5ff8f4e63a9c29b7021e44fc6c0fa20f