[INFO] fetching crate char-coal 0.2.4...
[INFO] testing char-coal-0.2.4 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate char-coal 0.2.4 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate char-coal 0.2.4
[INFO] finished tweaking crates.io crate char-coal 0.2.4
[INFO] tweaked toml for crates.io crate char-coal 0.2.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate char-coal 0.2.4 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 char-coal 0.2.4 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 servo_arc v0.1.1
[INFO] [stderr]   Downloaded semver v1.0.10
[INFO] [stderr]   Downloaded thin-slice v0.1.1
[INFO] [stderr]   Downloaded shellexpand v3.0.0
[INFO] [stderr]   Downloaded scraper v0.14.0
[INFO] [stderr]   Downloaded symphonia-codec-pcm v0.5.1
[INFO] [stderr]   Downloaded dtoa-short v0.3.3
[INFO] [stderr]   Downloaded cssparser-macros v0.6.0
[INFO] [stderr]   Downloaded selectors v0.22.0
[INFO] [stderr]   Downloaded symphonia-utils-xiph v0.5.1
[INFO] [stderr]   Downloaded os_str_bytes v6.1.0
[INFO] [stderr]   Downloaded io-lifetimes v1.0.3
[INFO] [stderr]   Downloaded minimp3-sys v0.3.2
[INFO] [stderr]   Downloaded hound v3.4.0
[INFO] [stderr]   Downloaded cpal v0.14.1
[INFO] [stderr]   Downloaded claxon v0.4.3
[INFO] [stderr]   Downloaded symphonia-core v0.5.1
[INFO] [stderr]   Downloaded hashbrown v0.12.1
[INFO] [stderr]   Downloaded slice-deque v0.3.0
[INFO] [stderr]   Downloaded symphonia-bundle-mp3 v0.5.1
[INFO] [stderr]   Downloaded symphonia-bundle-flac v0.5.1
[INFO] [stderr]   Downloaded clap v4.0.22
[INFO] [stderr]   Downloaded nix v0.25.0
[INFO] [stderr]   Downloaded rustix v0.36.5
[INFO] [stderr]   Downloaded symphonia-format-mkv v0.5.1
[INFO] [stderr]   Downloaded symphonia-format-ogg v0.5.1
[INFO] [stderr]   Downloaded symphonia-format-wav v0.5.1
[INFO] [stderr]   Downloaded symphonia-metadata v0.5.1
[INFO] [stderr]   Downloaded symphonia v0.5.1
[INFO] [stderr]   Downloaded whatlang v0.16.0
[INFO] [stderr]   Downloaded is-terminal v0.4.2
[INFO] [stderr]   Downloaded minimp3 v0.5.1
[INFO] [stderr]   Downloaded symphonia-codec-vorbis v0.5.1
[INFO] [stderr]   Downloaded cssparser v0.27.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a73e1f48cdee03c48f1f7c60e2e252c38a07e0481fd64d08452c05abbfdb942b
[INFO] running `Command { std: "docker" "start" "-a" "a73e1f48cdee03c48f1f7c60e2e252c38a07e0481fd64d08452c05abbfdb942b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a73e1f48cdee03c48f1f7c60e2e252c38a07e0481fd64d08452c05abbfdb942b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a73e1f48cdee03c48f1f7c60e2e252c38a07e0481fd64d08452c05abbfdb942b", kill_on_drop: false }`
[INFO] [stdout] a73e1f48cdee03c48f1f7c60e2e252c38a07e0481fd64d08452c05abbfdb942b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] af2c6b492293363eab4ca835e969b4621d30d5eb8655ca674198a759fd859151
[INFO] running `Command { std: "docker" "start" "-a" "af2c6b492293363eab4ca835e969b4621d30d5eb8655ca674198a759fd859151", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling bytemuck v1.9.1
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling openssl-sys v0.9.74
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling tracing-core v0.1.27
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling symphonia-core v0.5.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling openssl v0.10.40
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[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 tracing v0.1.35
[INFO] [stderr]    Compiling io-lifetimes v1.0.3
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling rustix v0.36.5
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]    Compiling tendril v0.4.3
[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" "af2c6b492293363eab4ca835e969b4621d30d5eb8655ca674198a759fd859151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af2c6b492293363eab4ca835e969b4621d30d5eb8655ca674198a759fd859151", kill_on_drop: false }`
[INFO] [stdout] af2c6b492293363eab4ca835e969b4621d30d5eb8655ca674198a759fd859151