[INFO] fetching crate mat2image 0.2.0...
[INFO] testing mat2image-0.2.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate mat2image 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate mat2image 0.2.0
[INFO] finished tweaking crates.io crate mat2image 0.2.0
[INFO] tweaked toml for crates.io crate mat2image 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mat2image 0.2.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mat2image 0.2.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memoffset v0.7.1
[INFO] [stderr]   Downloaded either v1.8.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.14
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.13
[INFO] [stderr]   Downloaded scoped_threadpool v0.1.9
[INFO] [stderr]   Downloaded futures-sink v0.3.25
[INFO] [stderr]   Downloaded shlex v1.1.0
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.2
[INFO] [stderr]   Downloaded color_quant v1.1.0
[INFO] [stderr]   Downloaded rgb v0.8.34
[INFO] [stderr]   Downloaded glob v0.3.0
[INFO] [stderr]   Downloaded jobserver v0.1.25
[INFO] [stderr]   Downloaded nanorand v0.7.0
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded futures-core v0.3.25
[INFO] [stderr]   Downloaded threadpool v1.8.1
[INFO] [stderr]   Downloaded num-integer v0.1.45
[INFO] [stderr]   Downloaded dunce v1.0.3
[INFO] [stderr]   Downloaded lebe v0.5.2
[INFO] [stderr]   Downloaded pin-project-internal v1.0.12
[INFO] [stderr]   Downloaded clang-sys v1.4.0
[INFO] [stderr]   Downloaded spin v0.9.4
[INFO] [stderr]   Downloaded num-rational v0.4.1
[INFO] [stderr]   Downloaded weezl v0.1.7
[INFO] [stderr]   Downloaded semver v1.0.14
[INFO] [stderr]   Downloaded half v2.1.0
[INFO] [stderr]   Downloaded pin-project v1.0.12
[INFO] [stderr]   Downloaded cc v1.0.77
[INFO] [stderr]   Downloaded flume v0.10.14
[INFO] [stderr]   Downloaded num-traits v0.2.15
[INFO] [stderr]   Downloaded rayon-core v1.10.1
[INFO] [stderr]   Downloaded opencv-binding-generator v0.52.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.6
[INFO] [stderr]   Downloaded aho-corasick v0.7.20
[INFO] [stderr]   Downloaded clang v2.0.0
[INFO] [stderr]   Downloaded rayon v1.6.0
[INFO] [stderr]   Downloaded exr v1.5.2
[INFO] [stderr]   Downloaded image v0.24.5
[INFO] [stderr]   Downloaded gif v0.11.4
[INFO] [stderr]   Downloaded jpeg-decoder v0.3.0
[INFO] [stderr]   Downloaded opencv v0.74.0
[INFO] [stderr]   Downloaded tiff v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4652a267ffeb506cf419a5587004f007bb215641486a1a440b2d256e5917d683
[INFO] running `Command { std: "docker" "start" "-a" "4652a267ffeb506cf419a5587004f007bb215641486a1a440b2d256e5917d683", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4652a267ffeb506cf419a5587004f007bb215641486a1a440b2d256e5917d683", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4652a267ffeb506cf419a5587004f007bb215641486a1a440b2d256e5917d683", kill_on_drop: false }`
[INFO] [stdout] 4652a267ffeb506cf419a5587004f007bb215641486a1a440b2d256e5917d683
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b8e2dd228a47bb98a6419aba3885834d149c417d135042375b0a98a78c76cf4
[INFO] running `Command { std: "docker" "start" "-a" "8b8e2dd228a47bb98a6419aba3885834d149c417d135042375b0a98a78c76cf4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling dunce v1.0.3
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling bytemuck v1.12.3
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling rgb v0.8.34
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling clang-sys v1.4.0
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling jobserver v0.1.25
[INFO] [stderr]    Compiling num_cpus v1.14.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8b8e2dd228a47bb98a6419aba3885834d149c417d135042375b0a98a78c76cf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b8e2dd228a47bb98a6419aba3885834d149c417d135042375b0a98a78c76cf4", kill_on_drop: false }`
[INFO] [stdout] 8b8e2dd228a47bb98a6419aba3885834d149c417d135042375b0a98a78c76cf4
