[INFO] fetching crate motif_finder 0.9.2...
[INFO] testing motif_finder-0.9.2 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate motif_finder 0.9.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate motif_finder 0.9.2
[INFO] finished tweaking crates.io crate motif_finder 0.9.2
[INFO] tweaked toml for crates.io crate motif_finder 0.9.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate motif_finder 0.9.2 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate motif_finder 0.9.2 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e828ad713cb4067773b0d519509aa6d3c9eb18fe5d7bbb8374334214ab4117fb
[INFO] running `Command { std: "docker" "start" "-a" "e828ad713cb4067773b0d519509aa6d3c9eb18fe5d7bbb8374334214ab4117fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e828ad713cb4067773b0d519509aa6d3c9eb18fe5d7bbb8374334214ab4117fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e828ad713cb4067773b0d519509aa6d3c9eb18fe5d7bbb8374334214ab4117fb", kill_on_drop: false }`
[INFO] [stdout] e828ad713cb4067773b0d519509aa6d3c9eb18fe5d7bbb8374334214ab4117fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db54f8c4dbdad2ac2f9ae83a81e47292f9d41944b538f01150a2f308fa8259d0
[INFO] running `Command { std: "docker" "start" "-a" "db54f8c4dbdad2ac2f9ae83a81e47292f9d41944b538f01150a2f308fa8259d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling serde_derive v1.0.158
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling serde v1.0.158
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling paste v1.0.12
[INFO] [stderr]    Compiling bytemuck v1.13.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.9
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling rustix v0.37.6
[INFO] [stderr]    Compiling safe_arch v0.6.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling matrixmultiply v0.3.2
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling linux-raw-sys v0.3.1
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.53/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 wide v0.7.8
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.7
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[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 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "db54f8c4dbdad2ac2f9ae83a81e47292f9d41944b538f01150a2f308fa8259d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db54f8c4dbdad2ac2f9ae83a81e47292f9d41944b538f01150a2f308fa8259d0", kill_on_drop: false }`
[INFO] [stdout] db54f8c4dbdad2ac2f9ae83a81e47292f9d41944b538f01150a2f308fa8259d0