[INFO] fetching crate sanguine 0.3.1...
[INFO] testing sanguine-0.3.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate sanguine 0.3.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate sanguine 0.3.1
[INFO] finished tweaking crates.io crate sanguine 0.3.1
[INFO] tweaked toml for crates.io crate sanguine 0.3.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sanguine 0.3.1 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 sanguine 0.3.1 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 wezterm-dynamic v0.1.0
[INFO] [stderr]   Downloaded ordered-float v3.7.0
[INFO] [stderr]   Downloaded wezterm-color-types v0.2.0
[INFO] [stderr]   Downloaded wezterm-dynamic-derive v0.1.0
[INFO] [stderr]   Downloaded memmem v0.1.1
[INFO] [stderr]   Downloaded csscolorparser v0.6.2
[INFO] [stderr]   Downloaded signal-hook v0.3.15
[INFO] [stderr]   Downloaded phf_codegen v0.11.1
[INFO] [stderr]   Downloaded num-derive v0.3.3
[INFO] [stderr]   Downloaded lab v0.11.0
[INFO] [stderr]   Downloaded terminfo v0.7.5
[INFO] [stderr]   Downloaded ansi-to-tui v3.0.0
[INFO] [stderr]   Downloaded crossterm_winapi v0.9.0
[INFO] [stderr]   Downloaded signal-hook v0.1.17
[INFO] [stderr]   Downloaded vtparse v0.6.2
[INFO] [stderr]   Downloaded wezterm-bidi v0.2.2
[INFO] [stderr]   Downloaded termwiz v0.20.0
[INFO] [stderr]   Downloaded crossterm v0.26.1
[INFO] [stderr]   Downloaded ratatui v0.20.1
[INFO] [stderr]   Downloaded finl_unicode v1.2.0
[INFO] [stderr]   Downloaded deltae v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b97126e17dde2a0a5982a1e6814d8503f744683e87a6d8456fdeba87320879c0
[INFO] running `Command { std: "docker" "start" "-a" "b97126e17dde2a0a5982a1e6814d8503f744683e87a6d8456fdeba87320879c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b97126e17dde2a0a5982a1e6814d8503f744683e87a6d8456fdeba87320879c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b97126e17dde2a0a5982a1e6814d8503f744683e87a6d8456fdeba87320879c0", kill_on_drop: false }`
[INFO] [stdout] b97126e17dde2a0a5982a1e6814d8503f744683e87a6d8456fdeba87320879c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 08a52bf93026dd30b2a6f5b8a9a9850ac758de5b918d73840f3a39c3ebeae50d
[INFO] running `Command { std: "docker" "start" "-a" "08a52bf93026dd30b2a6f5b8a9a9850ac758de5b918d73840f3a39c3ebeae50d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.58
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling lab v0.11.0
[INFO] [stderr]    Compiling aho-corasick v1.0.1
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling cpufeatures v0.2.7
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling deltae v0.3.1
[INFO] [stderr]    Compiling vtparse v0.6.2
[INFO] [stderr]    Compiling base64 v0.21.0
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling phf_shared v0.11.1
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.58/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 finl_unicode v1.2.0
[INFO] [stderr]    Compiling phf v0.10.1
[INFO] [stderr]    Compiling memmem v0.1.1
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[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" "08a52bf93026dd30b2a6f5b8a9a9850ac758de5b918d73840f3a39c3ebeae50d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08a52bf93026dd30b2a6f5b8a9a9850ac758de5b918d73840f3a39c3ebeae50d", kill_on_drop: false }`
[INFO] [stdout] 08a52bf93026dd30b2a6f5b8a9a9850ac758de5b918d73840f3a39c3ebeae50d