[INFO] fetching crate exers 0.2.0...
[INFO] checking exers-0.2.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate exers 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate exers 0.2.0 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 exers 0.2.0
[INFO] finished tweaking crates.io crate exers 0.2.0
[INFO] tweaked toml for crates.io crate exers 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate exers 0.2.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid v1.3.3
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[INFO] [stderr]   Downloaded wasmer-wasix-types v0.5.0
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[INFO] [stderr]   Downloaded wasmer-types v4.0.0-alpha.1
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[INFO] [stderr]   Downloaded virtual-net v0.2.0
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[INFO] [stderr]   Downloaded inkwell_internals v0.7.0
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[INFO] [stderr]   Downloaded llvm-sys v140.1.0
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[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.33.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 2d44353423c62f1908703d5ccc4fb82389bbb2413ec29e5ccd35dfa99002c107
[INFO] running `Command { std: "docker" "start" "-a" "2d44353423c62f1908703d5ccc4fb82389bbb2413ec29e5ccd35dfa99002c107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d44353423c62f1908703d5ccc4fb82389bbb2413ec29e5ccd35dfa99002c107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d44353423c62f1908703d5ccc4fb82389bbb2413ec29e5ccd35dfa99002c107", kill_on_drop: false }`
[INFO] [stdout] 2d44353423c62f1908703d5ccc4fb82389bbb2413ec29e5ccd35dfa99002c107
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d9b3c2ba4e9fd7a1edc1d78da444b8996a419526beb6cc3e0d5d5d7cb59e630c
[INFO] running `Command { std: "docker" "start" "-a" "d9b3c2ba4e9fd7a1edc1d78da444b8996a419526beb6cc3e0d5d5d7cb59e630c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling target-lexicon v0.12.7
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling bytecheck v0.6.11
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking simdutf8 v0.1.4
[INFO] [stderr]    Compiling cranelift-isle v0.91.1
[INFO] [stderr]    Compiling rend v0.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling tokio v1.28.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.59/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 rkyv v0.7.42
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.91.1
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.91.1
[INFO] [stderr]     Checking fxhash v0.2.1
[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" "d9b3c2ba4e9fd7a1edc1d78da444b8996a419526beb6cc3e0d5d5d7cb59e630c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9b3c2ba4e9fd7a1edc1d78da444b8996a419526beb6cc3e0d5d5d7cb59e630c", kill_on_drop: false }`
[INFO] [stdout] d9b3c2ba4e9fd7a1edc1d78da444b8996a419526beb6cc3e0d5d5d7cb59e630c
