[INFO] fetching crate gbsdiff 1.0.0...
[INFO] checking gbsdiff-1.0.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate gbsdiff 1.0.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate gbsdiff 1.0.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gbsdiff 1.0.0
[INFO] finished tweaking crates.io crate gbsdiff 1.0.0
[INFO] tweaked toml for crates.io crate gbsdiff 1.0.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate gbsdiff 1.0.0 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded slicedisplay v0.2.2
[INFO] [stderr]   Downloaded parse-display-derive v0.6.0
[INFO] [stderr]   Downloaded parse-display v0.6.0
[INFO] [stderr]   Downloaded try-from-discrim v1.0.0
[INFO] [stderr]   Downloaded argh v0.1.9
[INFO] [stderr]   Downloaded gb-cpu-sim v1.1.0
[INFO] [stderr]   Downloaded structmeta-derive v0.1.5
[INFO] [stderr]   Downloaded argh_shared v0.1.9
[INFO] [stderr]   Downloaded structmeta v0.1.5
[INFO] [stderr]   Downloaded argh_derive v0.1.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3839f25bcc57ccf1b839b03da6134b0e181b67b1b5c52b598f89261d61a706f6
[INFO] running `Command { std: "docker" "start" "-a" "3839f25bcc57ccf1b839b03da6134b0e181b67b1b5c52b598f89261d61a706f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3839f25bcc57ccf1b839b03da6134b0e181b67b1b5c52b598f89261d61a706f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3839f25bcc57ccf1b839b03da6134b0e181b67b1b5c52b598f89261d61a706f6", kill_on_drop: false }`
[INFO] [stdout] 3839f25bcc57ccf1b839b03da6134b0e181b67b1b5c52b598f89261d61a706f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af70e9e4d8f9dc15eb75f2b46a83e4d8a7fadec5959ec26a925f92df9399a1eb
[INFO] running `Command { std: "docker" "start" "-a" "af70e9e4d8f9dc15eb75f2b46a83e4d8a7fadec5959ec26a925f92df9399a1eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]     Checking is_ci v1.1.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling argh_shared v0.1.9
[INFO] [stderr]    Compiling once_cell v1.15.0
[INFO] [stderr]     Checking slicedisplay v0.2.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.46/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] [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]    Compiling aho-corasick v0.7.19
[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" "af70e9e4d8f9dc15eb75f2b46a83e4d8a7fadec5959ec26a925f92df9399a1eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af70e9e4d8f9dc15eb75f2b46a83e4d8a7fadec5959ec26a925f92df9399a1eb", kill_on_drop: false }`
[INFO] [stdout] af70e9e4d8f9dc15eb75f2b46a83e4d8a7fadec5959ec26a925f92df9399a1eb
