[INFO] fetching crate u_u 0.1.0...
[INFO] testing u_u-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate u_u 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate u_u 0.1.0
[INFO] finished tweaking crates.io crate u_u 0.1.0
[INFO] tweaked toml for crates.io crate u_u 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate u_u 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate u_u 0.1.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vtracer v0.5.0
[INFO] [stderr]   Downloaded rayon-core v1.11.0
[INFO] [stderr]   Downloaded fdeflate v0.3.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.14
[INFO] [stderr]   Downloaded weezl v0.1.7
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.15
[INFO] [stderr]   Downloaded png v0.17.8
[INFO] [stderr]   Downloaded visioncortex v0.8.0
[INFO] [stderr]   Downloaded rayon v1.7.0
[INFO] [stderr]   Downloaded roots v0.0.6
[INFO] [stderr]   Downloaded simd-adler32 v0.3.5
[INFO] [stderr]   Downloaded gif v0.11.4
[INFO] [stderr]   Downloaded jpeg-decoder v0.3.0
[INFO] [stderr]   Downloaded flo_curves v0.3.1
[INFO] [stderr]   Downloaded tiff v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6c282619360f84307b3ad02edbb0ee258e4b2943badb40ae873327b8ceb6fc2
[INFO] running `Command { std: "docker" "start" "-a" "a6c282619360f84307b3ad02edbb0ee258e4b2943badb40ae873327b8ceb6fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6c282619360f84307b3ad02edbb0ee258e4b2943badb40ae873327b8ceb6fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6c282619360f84307b3ad02edbb0ee258e4b2943badb40ae873327b8ceb6fc2", kill_on_drop: false }`
[INFO] [stdout] a6c282619360f84307b3ad02edbb0ee258e4b2943badb40ae873327b8ceb6fc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a70e182f8c8d02b9c5b21eaba1ed62e3954a6edc1e3ce4bce532156d43693510
[INFO] running `Command { std: "docker" "start" "-a" "a70e182f8c8d02b9c5b21eaba1ed62e3954a6edc1e3ce4bce532156d43693510", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling simd-adler32 v0.3.5
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]    Compiling weezl v0.1.7
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling roots v0.0.6
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling gif v0.11.4
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling fdeflate v0.3.0
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.59/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 num_cpus v1.15.0
[INFO] [stderr]    Compiling atty v0.2.14
[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] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a70e182f8c8d02b9c5b21eaba1ed62e3954a6edc1e3ce4bce532156d43693510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a70e182f8c8d02b9c5b21eaba1ed62e3954a6edc1e3ce4bce532156d43693510", kill_on_drop: false }`
[INFO] [stdout] a70e182f8c8d02b9c5b21eaba1ed62e3954a6edc1e3ce4bce532156d43693510