[INFO] fetching crate rconcrete 0.2.0...
[INFO] checking rconcrete-0.2.0 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate rconcrete 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rconcrete 0.2.0 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rconcrete 0.2.0
[INFO] finished tweaking crates.io crate rconcrete 0.2.0
[INFO] tweaked toml for crates.io crate rconcrete 0.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate rconcrete 0.2.0 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" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded err-derive v0.3.1
[INFO] [stderr]   Downloaded rcon v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79adf5b2e4ed1ba9cb7b1e874deac0cb8afec4d5ce3df109233b620091915c0a
[INFO] running `Command { std: "docker" "start" "-a" "79adf5b2e4ed1ba9cb7b1e874deac0cb8afec4d5ce3df109233b620091915c0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79adf5b2e4ed1ba9cb7b1e874deac0cb8afec4d5ce3df109233b620091915c0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79adf5b2e4ed1ba9cb7b1e874deac0cb8afec4d5ce3df109233b620091915c0a", kill_on_drop: false }`
[INFO] [stdout] 79adf5b2e4ed1ba9cb7b1e874deac0cb8afec4d5ce3df109233b620091915c0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98e98ddc3f68ea143fdc1197e76f9697a3f659873fa78286615e842ce213d1bf
[INFO] running `Command { std: "docker" "start" "-a" "98e98ddc3f68ea143fdc1197e76f9697a3f659873fa78286615e842ce213d1bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustix v0.37.14
[INFO] [stderr]     Checking linux-raw-sys v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]     Checking anstyle-parse v0.2.0
[INFO] [stderr]    Compiling tokio v1.27.0
[INFO] [stderr]     Checking anstyle v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.56/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 serde_json v1.0.96
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stdout] error: aborting due to 1 previous error
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "98e98ddc3f68ea143fdc1197e76f9697a3f659873fa78286615e842ce213d1bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98e98ddc3f68ea143fdc1197e76f9697a3f659873fa78286615e842ce213d1bf", kill_on_drop: false }`
[INFO] [stdout] 98e98ddc3f68ea143fdc1197e76f9697a3f659873fa78286615e842ce213d1bf
