[INFO] fetching crate tiny-png 0.1.0...
[INFO] testing tiny-png-0.1.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate tiny-png 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate tiny-png 0.1.0
[INFO] finished tweaking crates.io crate tiny-png 0.1.0
[INFO] tweaked toml for crates.io crate tiny-png 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tiny-png 0.1.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tiny-png 0.1.0 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytes v1.2.1
[INFO] [stderr]   Downloaded image-reducer v0.1.1
[INFO] [stderr]   Downloaded pathdiff v0.2.1
[INFO] [stderr]   Downloaded typed-arena v2.0.1
[INFO] [stderr]   Downloaded rgb v0.8.34
[INFO] [stderr]   Downloaded wild v2.1.0
[INFO] [stderr]   Downloaded iter-read v0.3.1
[INFO] [stderr]   Downloaded cloudflare-zlib v0.2.9
[INFO] [stderr]   Downloaded parking_lot_core v0.9.4
[INFO] [stderr]   Downloaded stderrlog v0.5.4
[INFO] [stderr]   Downloaded libdeflater v0.10.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.12
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.11
[INFO] [stderr]   Downloaded os_str_bytes v6.4.0
[INFO] [stderr]   Downloaded globset v0.4.9
[INFO] [stderr]   Downloaded zopfli v0.7.1
[INFO] [stderr]   Downloaded oxipng v6.0.1
[INFO] [stderr]   Downloaded find-target v0.1.0
[INFO] [stderr]   Downloaded mio v0.8.5
[INFO] [stderr]   Downloaded bytesize v1.1.0
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.82
[INFO] [stderr]   Downloaded async-walkdir v0.2.0
[INFO] [stderr]   Downloaded bincode_derive v2.0.0-rc.2
[INFO] [stderr]   Downloaded virtue v0.0.8
[INFO] [stderr]   Downloaded cache-padded v1.2.0
[INFO] [stderr]   Downloaded eta v0.2.2
[INFO] [stderr]   Downloaded async-channel v1.7.1
[INFO] [stderr]   Downloaded bincode v2.0.0-rc.2
[INFO] [stderr]   Downloaded futures-lite v1.12.0
[INFO] [stderr]   Downloaded libdeflate-sys v0.10.0
[INFO] [stderr]   Downloaded blocking v1.2.0
[INFO] [stderr]   Downloaded async-task v4.3.0
[INFO] [stderr]   Downloaded async-lock v2.6.0
[INFO] [stderr]   Downloaded cloudflare-zlib-sys v0.3.0
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.82
[INFO] [stderr]   Downloaded cxx-build v1.0.82
[INFO] [stderr]   Downloaded cxx v1.0.82
[INFO] [stderr]   Downloaded clap v4.0.26
[INFO] [stderr]   Downloaded tokio v1.22.0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10e80ea0157a3ef057506f38540abcc39c8b07fb24005ee22c9fb2f0d8f2b701
[INFO] running `Command { std: "docker" "start" "-a" "10e80ea0157a3ef057506f38540abcc39c8b07fb24005ee22c9fb2f0d8f2b701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10e80ea0157a3ef057506f38540abcc39c8b07fb24005ee22c9fb2f0d8f2b701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10e80ea0157a3ef057506f38540abcc39c8b07fb24005ee22c9fb2f0d8f2b701", kill_on_drop: false }`
[INFO] [stdout] 10e80ea0157a3ef057506f38540abcc39c8b07fb24005ee22c9fb2f0d8f2b701
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 642fc284b5fb355ac3418fc28e6e8b4c31aaeeecadabbfdeb96d4278ca88caa4
[INFO] running `Command { std: "docker" "start" "-a" "642fc284b5fb355ac3418fc28e6e8b4c31aaeeecadabbfdeb96d4278ca88caa4", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling futures-io v0.3.25
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling num_cpus v1.14.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling os_str_bytes v6.4.0
[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] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling concurrent-queue v1.2.4
[INFO] [stderr]    Compiling miniz_oxide v0.5.4
[INFO] [stderr]    Compiling cloudflare-zlib-sys v0.3.0
[INFO] [stderr]    Compiling libdeflate-sys v0.10.0
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling futures-sink v0.3.25
[INFO] [stderr]    Compiling async-channel v1.7.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[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" "642fc284b5fb355ac3418fc28e6e8b4c31aaeeecadabbfdeb96d4278ca88caa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "642fc284b5fb355ac3418fc28e6e8b4c31aaeeecadabbfdeb96d4278ca88caa4", kill_on_drop: false }`
[INFO] [stdout] 642fc284b5fb355ac3418fc28e6e8b4c31aaeeecadabbfdeb96d4278ca88caa4
