[INFO] cloning repository https://github.com/unitybirb/birdbrain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/unitybirb/birdbrain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funitybirb%2Fbirdbrain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funitybirb%2Fbirdbrain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 032e1df89b99dcf458cc7db52a2b22c420c9614c
[INFO] checking unitybirb/birdbrain against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113240
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funitybirb%2Fbirdbrain" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/unitybirb/birdbrain on toolchain 6162f6f12339aa81fe16b8a64644ead497e411b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/unitybirb/birdbrain
[INFO] finished tweaking git repo https://github.com/unitybirb/birdbrain
[INFO] tweaked toml for git repo https://github.com/unitybirb/birdbrain written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/unitybirb/birdbrain 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" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded maplit v0.1.6
[INFO] [stderr]   Downloaded aho-corasick v0.6.10
[INFO] [stderr]   Downloaded utf8-ranges v1.0.5
[INFO] [stderr]   Downloaded lazy_static v0.2.11
[INFO] [stderr]   Downloaded thread_local v0.3.6
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded hyper-rustls v0.23.1
[INFO] [stderr]   Downloaded markov-chain v0.1.1
[INFO] [stderr]   Downloaded ucd-util v0.1.9
[INFO] [stderr]   Downloaded regex-syntax v0.5.6
[INFO] [stderr]   Downloaded regex v0.2.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfe4819121dbc6e17c19fe5fb9b8ef8da4945b4b3a37a6a4d0296cc7abf21dec
[INFO] running `Command { std: "docker" "start" "-a" "dfe4819121dbc6e17c19fe5fb9b8ef8da4945b4b3a37a6a4d0296cc7abf21dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfe4819121dbc6e17c19fe5fb9b8ef8da4945b4b3a37a6a4d0296cc7abf21dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe4819121dbc6e17c19fe5fb9b8ef8da4945b4b3a37a6a4d0296cc7abf21dec", kill_on_drop: false }`
[INFO] [stdout] dfe4819121dbc6e17c19fe5fb9b8ef8da4945b4b3a37a6a4d0296cc7abf21dec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a44a539e376bd8f3a236683cfd0fdb72dcaa5794ff4ca2d674b6acd643af7e0b
[INFO] running `Command { std: "docker" "start" "-a" "a44a539e376bd8f3a236683cfd0fdb72dcaa5794ff4ca2d674b6acd643af7e0b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling tokio v1.24.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling rustls v0.20.7
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling openssl v0.10.48
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]    Compiling async-trait v0.1.58
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking ucd-util v0.1.9
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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]     Checking mime_guess v2.0.4
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking sha-1 v0.10.0
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking ipnet v2.5.1
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a44a539e376bd8f3a236683cfd0fdb72dcaa5794ff4ca2d674b6acd643af7e0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a44a539e376bd8f3a236683cfd0fdb72dcaa5794ff4ca2d674b6acd643af7e0b", kill_on_drop: false }`
[INFO] [stdout] a44a539e376bd8f3a236683cfd0fdb72dcaa5794ff4ca2d674b6acd643af7e0b