[INFO] fetching crate waffle 0.0.22...
[INFO] checking waffle-0.0.22 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] extracting crate waffle 0.0.22 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate waffle 0.0.22 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate waffle 0.0.22
[INFO] finished tweaking crates.io crate waffle 0.0.22
[INFO] tweaked toml for crates.io crate waffle 0.0.22 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate waffle 0.0.22 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_arbitrary v1.2.3
[INFO] [stderr]   Downloaded arbitrary v1.2.3
[INFO] [stderr]   Downloaded wasm-encoder v0.20.0
[INFO] [stderr]   Downloaded wasm-encoder v0.7.0
[INFO] [stderr]   Downloaded wasm-smith v0.8.0
[INFO] [stderr]   Downloaded libfuzzer-sys v0.4.6
[INFO] [stderr]   Downloaded cpp_demangle v0.4.0
[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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 469ed76a8200033b0943423740313d5f1acb9197586077ca0a66c8b4ae7e4c23
[INFO] running `Command { std: "docker" "start" "-a" "469ed76a8200033b0943423740313d5f1acb9197586077ca0a66c8b4ae7e4c23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "469ed76a8200033b0943423740313d5f1acb9197586077ca0a66c8b4ae7e4c23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "469ed76a8200033b0943423740313d5f1acb9197586077ca0a66c8b4ae7e4c23", kill_on_drop: false }`
[INFO] [stdout] 469ed76a8200033b0943423740313d5f1acb9197586077ca0a66c8b4ae7e4c23
[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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1817e2cc8032d2433ec981a5be8849a7414b2618ce6e7fb2ffc73f3e1428b543
[INFO] running `Command { std: "docker" "start" "-a" "1817e2cc8032d2433ec981a5be8849a7414b2618ce6e7fb2ffc73f3e1428b543", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling unicode-segmentation v1.10.0
[INFO] [stderr]    Compiling cpp_demangle v0.4.0
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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 leb128 v0.2.5
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking termcolor v1.1.3
[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" "1817e2cc8032d2433ec981a5be8849a7414b2618ce6e7fb2ffc73f3e1428b543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1817e2cc8032d2433ec981a5be8849a7414b2618ce6e7fb2ffc73f3e1428b543", kill_on_drop: false }`
[INFO] [stdout] 1817e2cc8032d2433ec981a5be8849a7414b2618ce6e7fb2ffc73f3e1428b543