[INFO] fetching crate pipeawesome2 0.1.3...
[INFO] building pipeawesome2-0.1.3 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate pipeawesome2 0.1.3 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate pipeawesome2 0.1.3
[INFO] finished tweaking crates.io crate pipeawesome2 0.1.3
[INFO] tweaked toml for crates.io crate pipeawesome2 0.1.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pipeawesome2 0.1.3 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pipeawesome2 0.1.3 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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 peg v0.7.0
[INFO] [stderr]   Downloaded peg-runtime v0.7.0
[INFO] [stderr]   Downloaded pest_derive v2.4.0
[INFO] [stderr]   Downloaded graphviz-rust v0.1.2
[INFO] [stderr]   Downloaded futures-executor v0.3.24
[INFO] [stderr]   Downloaded peg-macros v0.7.0
[INFO] [stderr]   Downloaded polling v2.3.0
[INFO] [stderr]   Downloaded async-executor v1.4.1
[INFO] [stderr]   Downloaded async-lock v2.5.0
[INFO] [stderr]   Downloaded async-io v1.9.0
[INFO] [stderr]   Downloaded async-task v4.3.0
[INFO] [stderr]   Downloaded futures-util v0.3.24
[INFO] [stderr]   Downloaded dot-generator v0.1.0
[INFO] [stderr]   Downloaded pest_generator v2.4.0
[INFO] [stderr]   Downloaded wepoll-ffi v0.1.2
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] [stderr]   Downloaded pest v2.4.0
[INFO] [stderr]   Downloaded concurrent-queue v1.2.4
[INFO] [stderr]   Downloaded signal-hook v0.3.14
[INFO] [stderr]   Downloaded gloo-timers v0.2.4
[INFO] [stderr]   Downloaded value-bag v1.0.0-alpha.9
[INFO] [stderr]   Downloaded futures-core v0.3.24
[INFO] [stderr]   Downloaded futures-task v0.3.24
[INFO] [stderr]   Downloaded futures v0.3.24
[INFO] [stderr]   Downloaded into-attr v0.1.0
[INFO] [stderr]   Downloaded pest_meta v2.4.0
[INFO] [stderr]   Downloaded async-global-executor v2.3.0
[INFO] [stderr]   Downloaded cache-padded v1.2.0
[INFO] [stderr]   Downloaded async-channel v1.7.1
[INFO] [stderr]   Downloaded blocking v1.2.0
[INFO] [stderr]   Downloaded async-process v1.5.0
[INFO] [stderr]   Downloaded futures-lite v1.12.0
[INFO] [stderr]   Downloaded ctor v0.1.23
[INFO] [stderr]   Downloaded futures-channel v0.3.24
[INFO] [stderr]   Downloaded futures-macro v0.3.24
[INFO] [stderr]   Downloaded futures-sink v0.3.24
[INFO] [stderr]   Downloaded petgraph v0.6.2
[INFO] [stderr]   Downloaded serde_json v1.0.86
[INFO] [stderr]   Downloaded syn v1.0.102
[INFO] [stderr]   Downloaded async-trait v0.1.57
[INFO] [stderr]   Downloaded futures-io v0.3.24
[INFO] [stderr]   Downloaded dot-structures v0.1.0
[INFO] [stderr]   Downloaded into-attr-derive v0.1.0
[INFO] [stderr]   Downloaded digest v0.10.5
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20d470f4b6551802ff49d9b8fd0599d5d3284f16821af4189b2cc0d8af179ecf
[INFO] running `Command { std: "docker" "start" "-a" "20d470f4b6551802ff49d9b8fd0599d5d3284f16821af4189b2cc0d8af179ecf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20d470f4b6551802ff49d9b8fd0599d5d3284f16821af4189b2cc0d8af179ecf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20d470f4b6551802ff49d9b8fd0599d5d3284f16821af4189b2cc0d8af179ecf", kill_on_drop: false }`
[INFO] [stdout] 20d470f4b6551802ff49d9b8fd0599d5d3284f16821af4189b2cc0d8af179ecf
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ec2858a1b8e459f4387d40525a4ecd34cf011b461565c5f7cc5c91510952cca
[INFO] running `Command { std: "docker" "start" "-a" "3ec2858a1b8e459f4387d40525a4ecd34cf011b461565c5f7cc5c91510952cca", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-io v0.3.24
[INFO] [stderr]    Compiling once_cell v1.15.0
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling concurrent-queue v1.2.4
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling polling v2.3.0
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling async-io v1.9.0
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling futures-sink v0.3.24
[INFO] [stderr]    Compiling async-task v4.3.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/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 dot-structures v0.1.0
[INFO] [stderr]    Compiling async-channel v1.7.1
[INFO] [stderr]    Compiling async-process v1.5.0
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling async-lock v2.5.0
[INFO] [stderr]    Compiling peg-runtime v0.7.0
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling socket2 v0.4.7
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling into-attr v0.1.0
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling dot-generator v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.86
[INFO] [stderr]    Compiling async-trait v0.1.57
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling atty v0.2.14
[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" "3ec2858a1b8e459f4387d40525a4ecd34cf011b461565c5f7cc5c91510952cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ec2858a1b8e459f4387d40525a4ecd34cf011b461565c5f7cc5c91510952cca", kill_on_drop: false }`
[INFO] [stdout] 3ec2858a1b8e459f4387d40525a4ecd34cf011b461565c5f7cc5c91510952cca