[INFO] fetching crate serialport 4.2.2...
[INFO] checking serialport-4.2.2 against master#020bbe46bdf613c0b8211984eaa8e5fe97d6c92d for pr-122960
[INFO] extracting crate serialport 4.2.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate serialport 4.2.2 on toolchain 020bbe46bdf613c0b8211984eaa8e5fe97d6c92d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serialport 4.2.2
[INFO] finished tweaking crates.io crate serialport 4.2.2
[INFO] tweaked toml for crates.io crate serialport 4.2.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate serialport 4.2.2 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" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded atty v0.2.14
[INFO] [stderr]   Downloaded os_str_bytes v6.5.0
[INFO] [stderr]   Downloaded clap_lex v0.2.4
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded indexmap v1.9.3
[INFO] [stderr]   Downloaded aho-corasick v1.0.1
[INFO] [stderr]   Downloaded clap v3.2.25
[INFO] [stderr]   Downloaded regex-syntax v0.7.1
[INFO] [stderr]   Downloaded libc v0.2.144
[INFO] [stderr]   Downloaded regex v1.8.1
[INFO] [stderr]   Downloaded syn v2.0.16
[INFO] [stderr]   Downloaded textwrap v0.16.0
[INFO] [stderr]   Downloaded serde v1.0.163
[INFO] [stderr]   Downloaded proc-macro-error-attr v1.0.4
[INFO] [stderr]   Downloaded proc-macro-error v1.0.4
[INFO] [stderr]   Downloaded clap_derive v3.2.25
[INFO] [stderr]   Downloaded once_cell v1.17.1
[INFO] [stderr]   Downloaded termcolor v1.2.0
[INFO] [stderr]   Downloaded pkg-config v0.3.27
[INFO] [stderr]   Downloaded proc-macro2 v1.0.58
[INFO] [stderr]   Downloaded serde_derive v1.0.163
[INFO] [stderr]   Downloaded libudev v0.3.0
[INFO] [stderr]   Downloaded mach2 v0.4.1
[INFO] [stderr]   Downloaded quote v1.0.27
[INFO] [stderr]   Downloaded libudev-sys v0.1.4
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12674dafdf1eae56387e1d9878840dca0f655d1680c1df4b20391069e7a5b879
[INFO] running `Command { std: "docker" "start" "-a" "12674dafdf1eae56387e1d9878840dca0f655d1680c1df4b20391069e7a5b879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12674dafdf1eae56387e1d9878840dca0f655d1680c1df4b20391069e7a5b879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12674dafdf1eae56387e1d9878840dca0f655d1680c1df4b20391069e7a5b879", kill_on_drop: false }`
[INFO] [stdout] 12674dafdf1eae56387e1d9878840dca0f655d1680c1df4b20391069e7a5b879
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d74e571695775159f8825ff4820788f11e09536d4911846582c3b795798aa86
[INFO] running `Command { std: "docker" "start" "-a" "2d74e571695775159f8825ff4820788f11e09536d4911846582c3b795798aa86", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling proc-macro2 v1.0.58
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking os_str_bytes v6.5.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.58/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] 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" "2d74e571695775159f8825ff4820788f11e09536d4911846582c3b795798aa86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d74e571695775159f8825ff4820788f11e09536d4911846582c3b795798aa86", kill_on_drop: false }`
[INFO] [stdout] 2d74e571695775159f8825ff4820788f11e09536d4911846582c3b795798aa86