[INFO] cloning repository https://github.com/Chalk-Organization/Blackboard
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Chalk-Organization/Blackboard" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChalk-Organization%2FBlackboard", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChalk-Organization%2FBlackboard'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f3540b27efb3f6407c94fd6673692a1470f84b1
[INFO] checking Chalk-Organization/Blackboard against master#da2544bfbe84df7b24d83c029c74299ebf6112c6 for pr-149681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChalk-Organization%2FBlackboard" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Chalk-Organization/Blackboard
[INFO] finished tweaking git repo https://github.com/Chalk-Organization/Blackboard
[INFO] tweaked toml for git repo https://github.com/Chalk-Organization/Blackboard written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Chalk-Organization/Blackboard on toolchain da2544bfbe84df7b24d83c029c74299ebf6112c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Chalk-Organization/Blackboard 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" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap_derive v4.0.10
[INFO] [stderr]   Downloaded clap v4.0.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f7e20519a7cd4d143d1a013e04057eccde64fe5ea9eb01f6e505331755c4254
[INFO] running `Command { std: "docker" "start" "-a" "1f7e20519a7cd4d143d1a013e04057eccde64fe5ea9eb01f6e505331755c4254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f7e20519a7cd4d143d1a013e04057eccde64fe5ea9eb01f6e505331755c4254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f7e20519a7cd4d143d1a013e04057eccde64fe5ea9eb01f6e505331755c4254", kill_on_drop: false }`
[INFO] [stdout] 1f7e20519a7cd4d143d1a013e04057eccde64fe5ea9eb01f6e505331755c4254
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53e94db75d5b5e46950d08f8589b399c8f45b79dc6d99149d235a577cacd3ec6
[INFO] running `Command { std: "docker" "start" "-a" "53e94db75d5b5e46950d08f8589b399c8f45b79dc6d99149d235a577cacd3ec6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling serde v1.0.145
[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]     Checking clap_lex v0.3.0
[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" "53e94db75d5b5e46950d08f8589b399c8f45b79dc6d99149d235a577cacd3ec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53e94db75d5b5e46950d08f8589b399c8f45b79dc6d99149d235a577cacd3ec6", kill_on_drop: false }`
[INFO] [stdout] 53e94db75d5b5e46950d08f8589b399c8f45b79dc6d99149d235a577cacd3ec6
