[INFO] fetching crate fiat-lux 0.3.7...
[INFO] checking fiat-lux-0.3.7 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate fiat-lux 0.3.7 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate fiat-lux 0.3.7 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 fiat-lux 0.3.7
[INFO] finished tweaking crates.io crate fiat-lux 0.3.7
[INFO] tweaked toml for crates.io crate fiat-lux 0.3.7 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate fiat-lux 0.3.7 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 terminal_size v0.2.5
[INFO] [stderr]   Downloaded levenshtein_automata v0.2.1
[INFO] [stderr]   Downloaded fastdivide v0.4.0
[INFO] [stderr]   Downloaded comfy-table v6.1.4
[INFO] [stderr]   Downloaded directories v4.0.1
[INFO] [stderr]   Downloaded tantivy-fst v0.4.0
[INFO] [stderr]   Downloaded pager v0.16.1
[INFO] [stderr]   Downloaded arc-swap v1.6.0
[INFO] [stderr]   Downloaded bitpacking v0.8.4
[INFO] [stderr]   Downloaded census v0.4.1
[INFO] [stderr]   Downloaded fail v0.5.1
[INFO] [stderr]   Downloaded fastfield_codecs v0.3.1
[INFO] [stderr]   Downloaded rust-stemmers v1.2.0
[INFO] [stderr]   Downloaded lz4_flex v0.9.5
[INFO] [stderr]   Downloaded tantivy-bitpacker v0.3.0
[INFO] [stderr]   Downloaded oneshot v0.1.5
[INFO] [stderr]   Downloaded measure_time v0.8.2
[INFO] [stderr]   Downloaded generator v0.7.3
[INFO] [stderr]   Downloaded ownedbytes v0.4.0
[INFO] [stderr]   Downloaded tantivy-common v0.4.0
[INFO] [stderr]   Downloaded tantivy v0.19.2
[INFO] [stderr]   Downloaded tantivy-query-grammar v0.19.0
[INFO] [stderr]   Downloaded murmurhash32 v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 82543211f491459aba8758eed14e47f7ef92ce660c7c692acf9f1c15591a564b
[INFO] running `Command { std: "docker" "start" "-a" "82543211f491459aba8758eed14e47f7ef92ce660c7c692acf9f1c15591a564b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82543211f491459aba8758eed14e47f7ef92ce660c7c692acf9f1c15591a564b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82543211f491459aba8758eed14e47f7ef92ce660c7c692acf9f1c15591a564b", kill_on_drop: false }`
[INFO] [stdout] 82543211f491459aba8758eed14e47f7ef92ce660c7c692acf9f1c15591a564b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 759ca9964dace4743dc6d7eabad8048f60bf63292b3f5f57e6f23fa1b3b46272
[INFO] running `Command { std: "docker" "start" "-a" "759ca9964dace4743dc6d7eabad8048f60bf63292b3f5f57e6f23fa1b3b46272", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.156
[INFO] [stderr]    Compiling io-lifetimes v1.0.6
[INFO] [stderr]    Compiling rustix v0.36.9
[INFO] [stderr]    Compiling serde v1.0.156
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling signal-hook v0.3.15
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking ownedbytes v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling thiserror v1.0.39
[INFO] [stderr]    Compiling async-trait v0.1.66
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking tantivy-common v0.4.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]     Checking tantivy-bitpacker v0.3.0
[INFO] [stderr]     Checking os_str_bytes v6.4.1
[INFO] [stderr]     Checking fastdivide v0.4.0
[INFO] [stderr]     Checking measure_time v0.8.2
[INFO] [stderr]     Checking bitpacking v0.8.4
[INFO] [stderr]     Checking murmurhash32 v0.2.0
[INFO] [stderr]     Checking levenshtein_automata v0.2.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.52/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 arc-swap v1.6.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking htmlescape v0.3.1
[INFO] [stderr]     Checking census v0.4.1
[INFO] [stderr]     Checking oneshot v0.1.5
[INFO] [stderr]     Checking lz4_flex v0.9.5
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking clap_lex v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking combine v4.6.6
[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" "759ca9964dace4743dc6d7eabad8048f60bf63292b3f5f57e6f23fa1b3b46272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "759ca9964dace4743dc6d7eabad8048f60bf63292b3f5f57e6f23fa1b3b46272", kill_on_drop: false }`
[INFO] [stdout] 759ca9964dace4743dc6d7eabad8048f60bf63292b3f5f57e6f23fa1b3b46272
