[INFO] fetching crate ansirs 0.1.7...
[INFO] checking ansirs-0.1.7 against master#3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777 for pr-132289
[INFO] extracting crate ansirs 0.1.7 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate ansirs 0.1.7 on toolchain 3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ansirs 0.1.7
[INFO] finished tweaking crates.io crate ansirs 0.1.7
[INFO] tweaked toml for crates.io crate ansirs 0.1.7 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate ansirs 0.1.7 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" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getrandom v0.2.6
[INFO] [stderr]   Downloaded siphasher v0.3.10
[INFO] [stderr]   Downloaded ctor v0.1.22
[INFO] [stderr]   Downloaded string-interner v0.14.0
[INFO] [stderr]   Downloaded quote v1.0.18
[INFO] [stderr]   Downloaded pretty_assertions v1.3.0
[INFO] [stderr]   Downloaded string_cache v0.8.4
[INFO] [stderr]   Downloaded libc v0.2.125
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a109bc14e9804e76a033112c785f4f061070491625bf102132bcb8b7dadb97b3
[INFO] running `Command { std: "docker" "start" "-a" "a109bc14e9804e76a033112c785f4f061070491625bf102132bcb8b7dadb97b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a109bc14e9804e76a033112c785f4f061070491625bf102132bcb8b7dadb97b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a109bc14e9804e76a033112c785f4f061070491625bf102132bcb8b7dadb97b3", kill_on_drop: false }`
[INFO] [stdout] a109bc14e9804e76a033112c785f4f061070491625bf102132bcb8b7dadb97b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+3f1be1ec7ec3d8e80beb381ee82164a0aa3ca777" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9b141fbe199ed4b77cff9b83be9ebd9c8e653e203559580ed06abcc1024d4d8
[INFO] running `Command { std: "docker" "start" "-a" "f9b141fbe199ed4b77cff9b83be9ebd9c8e653e203559580ed06abcc1024d4d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking siphasher v0.3.10
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking phf_shared v0.10.0
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.50/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] [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" "f9b141fbe199ed4b77cff9b83be9ebd9c8e653e203559580ed06abcc1024d4d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9b141fbe199ed4b77cff9b83be9ebd9c8e653e203559580ed06abcc1024d4d8", kill_on_drop: false }`
[INFO] [stdout] f9b141fbe199ed4b77cff9b83be9ebd9c8e653e203559580ed06abcc1024d4d8
