[INFO] fetching crate itsdns 0.1.0...
[INFO] checking itsdns-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate itsdns 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate itsdns 0.1.0
[INFO] finished tweaking crates.io crate itsdns 0.1.0
[INFO] tweaked toml for crates.io crate itsdns 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate itsdns 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 itsdns 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]  Downloading crates ...
[INFO] [stderr]   Downloaded nb v1.0.0
[INFO] [stderr]   Downloaded critical-section v1.1.1
[INFO] [stderr]   Downloaded atomic-polyfill v0.1.11
[INFO] [stderr]   Downloaded heapless v0.7.16
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e085bafb911a285d3d2860632f2200a23287b63dea04943ccfe019294111b276
[INFO] running `Command { std: "docker" "start" "-a" "e085bafb911a285d3d2860632f2200a23287b63dea04943ccfe019294111b276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e085bafb911a285d3d2860632f2200a23287b63dea04943ccfe019294111b276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e085bafb911a285d3d2860632f2200a23287b63dea04943ccfe019294111b276", kill_on_drop: false }`
[INFO] [stdout] e085bafb911a285d3d2860632f2200a23287b63dea04943ccfe019294111b276
[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=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3cd976c19ffdf03fff4a4389d97658531a8ba27300738b69333097d799492478
[INFO] running `Command { std: "docker" "start" "-a" "3cd976c19ffdf03fff4a4389d97658531a8ba27300738b69333097d799492478", kill_on_drop: false }`
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling semver v1.0.16
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling parking_lot_core v0.9.6
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking no-std-net v0.5.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling tokio v1.24.2
[INFO] [stderr]     Checking no-std-net v0.6.0
[INFO] [stderr]     Checking embedded-io v0.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking bytes v1.3.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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 rustc_version v0.4.0
[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" "3cd976c19ffdf03fff4a4389d97658531a8ba27300738b69333097d799492478", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cd976c19ffdf03fff4a4389d97658531a8ba27300738b69333097d799492478", kill_on_drop: false }`
[INFO] [stdout] 3cd976c19ffdf03fff4a4389d97658531a8ba27300738b69333097d799492478