[INFO] fetching crate rep-grep 0.0.6...
[INFO] checking rep-grep-0.0.6 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] extracting crate rep-grep 0.0.6 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate rep-grep 0.0.6 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rep-grep 0.0.6
[INFO] finished tweaking crates.io crate rep-grep 0.0.6
[INFO] tweaked toml for crates.io crate rep-grep 0.0.6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate rep-grep 0.0.6 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termtree v0.4.0
[INFO] [stderr]   Downloaded predicates-core v1.0.5
[INFO] [stderr]   Downloaded predicates-tree v1.0.7
[INFO] [stderr]   Downloaded grep-cli v0.1.7
[INFO] [stderr]   Downloaded diffy-fork-filenames v0.4.0
[INFO] [stderr]   Downloaded man v0.3.0
[INFO] [stderr]   Downloaded roff v0.1.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db54593f5cf283914c03c02eca63cddbc9bf36c4d65f1896e5bb36eca7128659
[INFO] running `Command { std: "docker" "start" "-a" "db54593f5cf283914c03c02eca63cddbc9bf36c4d65f1896e5bb36eca7128659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db54593f5cf283914c03c02eca63cddbc9bf36c4d65f1896e5bb36eca7128659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db54593f5cf283914c03c02eca63cddbc9bf36c4d65f1896e5bb36eca7128659", kill_on_drop: false }`
[INFO] [stdout] db54593f5cf283914c03c02eca63cddbc9bf36c4d65f1896e5bb36eca7128659
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b55fd63b761c2b0cf9cd7f95b13e8caccd292c3e7c7e47e2b312424535b896c5
[INFO] running `Command { std: "docker" "start" "-a" "b55fd63b761c2b0cf9cd7f95b13e8caccd292c3e7c7e47e2b312424535b896c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling rayon-core v1.10.2
[INFO] [stderr]    Compiling roff v0.1.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]    Compiling man v0.3.0
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking predicates-core v1.0.5
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking bstr v1.3.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling anyhow v1.0.69
[INFO] [stderr]     Checking termtree v0.4.0
[INFO] [stderr]     Checking diffy-fork-filenames v0.4.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking shell-words v1.1.0
[INFO] [stderr]     Checking unescape v0.1.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.51/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]     Checking predicates-tree v1.0.7
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b55fd63b761c2b0cf9cd7f95b13e8caccd292c3e7c7e47e2b312424535b896c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b55fd63b761c2b0cf9cd7f95b13e8caccd292c3e7c7e47e2b312424535b896c5", kill_on_drop: false }`
[INFO] [stdout] b55fd63b761c2b0cf9cd7f95b13e8caccd292c3e7c7e47e2b312424535b896c5