[INFO] fetching crate spdx-guide 0.2.3...
[INFO] checking spdx-guide-0.2.3 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] extracting crate spdx-guide 0.2.3 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate spdx-guide 0.2.3 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate spdx-guide 0.2.3
[INFO] finished tweaking crates.io crate spdx-guide 0.2.3
[INFO] tweaked toml for crates.io crate spdx-guide 0.2.3 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate spdx-guide 0.2.3 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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unic-langid v0.9.0
[INFO] [stderr]   Downloaded rust-embed-impl v6.3.0
[INFO] [stderr]   Downloaded rust-embed-utils v7.3.0
[INFO] [stderr]   Downloaded i18n-embed-impl v0.8.0
[INFO] [stderr]   Downloaded i18n-config v0.4.2
[INFO] [stderr]   Downloaded whoami v1.2.3
[INFO] [stderr]   Downloaded intl_pluralrules v7.0.1
[INFO] [stderr]   Downloaded self_cell v0.10.2
[INFO] [stderr]   Downloaded unic-langid-impl v0.9.0
[INFO] [stderr]   Downloaded i18n-embed-fl v0.6.4
[INFO] [stderr]   Downloaded i18n-embed v0.13.4
[INFO] [stderr]   Downloaded tinystr v0.3.4
[INFO] [stderr]   Downloaded rust-embed v6.4.1
[INFO] [stderr]   Downloaded spdx v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dac66f8d32dda6d2b3e4f92f39716f90664a360cdbf14b4fddfb0269a1e9fed2
[INFO] running `Command { std: "docker" "start" "-a" "dac66f8d32dda6d2b3e4f92f39716f90664a360cdbf14b4fddfb0269a1e9fed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dac66f8d32dda6d2b3e4f92f39716f90664a360cdbf14b4fddfb0269a1e9fed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dac66f8d32dda6d2b3e4f92f39716f90664a360cdbf14b4fddfb0269a1e9fed2", kill_on_drop: false }`
[INFO] [stdout] dac66f8d32dda6d2b3e4f92f39716f90664a360cdbf14b4fddfb0269a1e9fed2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11f27333d1d45cde73b97b94f5cd836a81d8db3346938e2910cc664172ab34b2
[INFO] running `Command { std: "docker" "start" "-a" "11f27333d1d45cde73b97b94f5cd836a81d8db3346938e2910cc664172ab34b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.44
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling libc v0.2.133
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling tinystr v0.3.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.44/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 lock_api v0.4.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[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" "11f27333d1d45cde73b97b94f5cd836a81d8db3346938e2910cc664172ab34b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11f27333d1d45cde73b97b94f5cd836a81d8db3346938e2910cc664172ab34b2", kill_on_drop: false }`
[INFO] [stdout] 11f27333d1d45cde73b97b94f5cd836a81d8db3346938e2910cc664172ab34b2