[INFO] fetching crate backtrace-ext 0.2.1...
[INFO] checking backtrace-ext-0.2.1 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate backtrace-ext 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate backtrace-ext 0.2.1 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backtrace-ext 0.2.1
[INFO] finished tweaking crates.io crate backtrace-ext 0.2.1
[INFO] tweaked toml for crates.io crate backtrace-ext 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate backtrace-ext 0.2.1 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded supports-unicode v2.0.0
[INFO] [stderr]   Downloaded ahash v0.7.6
[INFO] [stderr]   Downloaded is_ci v1.1.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.54
[INFO] [stderr]   Downloaded is-terminal v0.4.6
[INFO] [stderr]   Downloaded supports-hyperlinks v2.0.0
[INFO] [stderr]   Downloaded supports-color v2.0.0
[INFO] [stderr]   Downloaded hermit-abi v0.3.1
[INFO] [stderr]   Downloaded errno v0.3.0
[INFO] [stderr]   Downloaded miette-derive v5.6.0
[INFO] [stderr]   Downloaded addr2line v0.19.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.22
[INFO] [stderr]   Downloaded backtrace v0.3.67
[INFO] [stderr]   Downloaded unicode-linebreak v0.1.4
[INFO] [stderr]   Downloaded object v0.30.3
[INFO] [stderr]   Downloaded rustix v0.37.5
[INFO] [stderr]   Downloaded gimli v0.27.2
[INFO] [stderr]   Downloaded regex v1.7.3
[INFO] [stderr]   Downloaded linux-raw-sys v0.3.1
[INFO] [stderr]   Downloaded miette v5.6.0
[INFO] [stderr]   Downloaded owo-colors v3.5.0
[INFO] [stderr]   Downloaded io-lifetimes v1.0.9
[INFO] [stderr]   Downloaded smawk v0.3.1
[INFO] [stderr]   Downloaded textwrap v0.15.2
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a767960e8a284e6ee38c047ff5853edce28ea08e7b8e182e3a6057eb6c9d73cc
[INFO] running `Command { std: "docker" "start" "-a" "a767960e8a284e6ee38c047ff5853edce28ea08e7b8e182e3a6057eb6c9d73cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a767960e8a284e6ee38c047ff5853edce28ea08e7b8e182e3a6057eb6c9d73cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a767960e8a284e6ee38c047ff5853edce28ea08e7b8e182e3a6057eb6c9d73cc", kill_on_drop: false }`
[INFO] [stdout] a767960e8a284e6ee38c047ff5853edce28ea08e7b8e182e3a6057eb6c9d73cc
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc80357c43971ae02942853d85e98f8ee903a967cccd7c865a328307135e4539
[INFO] running `Command { std: "docker" "start" "-a" "fc80357c43971ae02942853d85e98f8ee903a967cccd7c865a328307135e4539", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.54
[INFO] [stderr]    Compiling io-lifetimes v1.0.9
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling rustix v0.37.5
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]     Checking linux-raw-sys v0.3.1
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking rustc-demangle v0.1.22
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking is_ci v1.1.1
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.54/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 aho-corasick v0.7.20
[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]     Checking object v0.30.3
[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" "fc80357c43971ae02942853d85e98f8ee903a967cccd7c865a328307135e4539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc80357c43971ae02942853d85e98f8ee903a967cccd7c865a328307135e4539", kill_on_drop: false }`
[INFO] [stdout] fc80357c43971ae02942853d85e98f8ee903a967cccd7c865a328307135e4539
