[INFO] fetching crate sanguine 0.3.1...
[INFO] testing sanguine-0.3.1 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate sanguine 0.3.1 into /workspace/builds/worker-6-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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sanguine 0.3.1 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wezterm-color-types v0.2.0
[INFO] [stderr]   Downloaded phf_macros v0.11.1
[INFO] [stderr]   Downloaded ordered-float v3.7.0
[INFO] [stderr]   Downloaded lab v0.11.0
[INFO] [stderr]   Downloaded wezterm-dynamic-derive v0.1.0
[INFO] [stderr]   Downloaded vtparse v0.6.2
[INFO] [stderr]   Downloaded memmem v0.1.1
[INFO] [stderr]   Downloaded wezterm-dynamic v0.1.0
[INFO] [stderr]   Downloaded terminfo v0.7.5
[INFO] [stderr]   Downloaded ansi-to-tui v3.0.0
[INFO] [stderr]   Downloaded wezterm-bidi v0.2.2
[INFO] [stderr]   Downloaded ratatui v0.20.1
[INFO] [stderr]   Downloaded termwiz v0.20.0
[INFO] [stderr]   Downloaded deltae v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d77aa42beb8b4382c0fbba68e87ad94029da3420f14a356f23dacb8bdcec1f5a
[INFO] running `Command { std: "docker" "start" "-a" "d77aa42beb8b4382c0fbba68e87ad94029da3420f14a356f23dacb8bdcec1f5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d77aa42beb8b4382c0fbba68e87ad94029da3420f14a356f23dacb8bdcec1f5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d77aa42beb8b4382c0fbba68e87ad94029da3420f14a356f23dacb8bdcec1f5a", kill_on_drop: false }`
[INFO] [stdout] d77aa42beb8b4382c0fbba68e87ad94029da3420f14a356f23dacb8bdcec1f5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83b4c87911d1b441a60990417e83aae2fc5281e6999f4e1d5fa97b5bbf98eed7
[INFO] running `Command { std: "docker" "start" "-a" "83b4c87911d1b441a60990417e83aae2fc5281e6999f4e1d5fa97b5bbf98eed7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.58
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling phf_shared v0.11.1
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling phf_generator v0.11.1
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling phf_codegen v0.11.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.58/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 anyhow v1.0.71
[INFO] [stderr]    Compiling lab v0.11.0
[INFO] [stderr]    Compiling terminfo v0.7.5
[INFO] [stderr]    Compiling aho-corasick v1.0.1
[INFO] [stderr]    Compiling phf_shared v0.10.0
[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" "83b4c87911d1b441a60990417e83aae2fc5281e6999f4e1d5fa97b5bbf98eed7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83b4c87911d1b441a60990417e83aae2fc5281e6999f4e1d5fa97b5bbf98eed7", kill_on_drop: false }`
[INFO] [stdout] 83b4c87911d1b441a60990417e83aae2fc5281e6999f4e1d5fa97b5bbf98eed7