[INFO] fetching crate brewdrivers 0.17.0...
[INFO] checking brewdrivers-0.17.0 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate brewdrivers 0.17.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate brewdrivers 0.17.0 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate brewdrivers 0.17.0
[INFO] finished tweaking crates.io crate brewdrivers 0.17.0
[INFO] tweaked toml for crates.io crate brewdrivers 0.17.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate brewdrivers 0.17.0 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-stream-impl v0.3.3
[INFO] [stderr]   Downloaded async-stream v0.3.3
[INFO] [stderr]   Downloaded tokio-stream v0.1.11
[INFO] [stderr]   Downloaded tokio-test v0.4.2
[INFO] [stderr]   Downloaded output_vt100 v0.1.3
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded crc v2.0.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.37
[INFO] [stderr]   Downloaded crc-catalog v1.1.1
[INFO] [stderr]   Downloaded hex v0.3.2
[INFO] [stderr]   Downloaded serde_derive v1.0.145
[INFO] [stderr]   Downloaded env_logger v0.9.1
[INFO] [stderr]   Downloaded pretty_assertions v1.3.0
[INFO] [stderr]   Downloaded serde_yaml v0.9.13
[INFO] [stderr]   Downloaded tokio v1.21.2
[INFO] [stderr]   Downloaded nix v0.16.1
[INFO] [stderr]   Downloaded mio-serial v5.0.2
[INFO] [stderr]   Downloaded tokio-serial v5.4.3
[INFO] [stderr]   Downloaded tokio-modbus v0.5.3
[INFO] [stderr]   Downloaded cc v1.0.66
[INFO] [stderr]   Downloaded serialport v4.0.0
[INFO] [stderr]   Downloaded unsafe-libyaml v0.2.4
[INFO] [stderr]   Downloaded thiserror v1.0.37
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded libudev v0.2.0
[INFO] [stderr]   Downloaded mach v0.2.3
[INFO] [stderr]   Downloaded thread_local v1.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e4118ff0aabfae8cf2057fa6e8245769bc0fba6763179616e7fb053f20017ec
[INFO] running `Command { std: "docker" "start" "-a" "0e4118ff0aabfae8cf2057fa6e8245769bc0fba6763179616e7fb053f20017ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e4118ff0aabfae8cf2057fa6e8245769bc0fba6763179616e7fb053f20017ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e4118ff0aabfae8cf2057fa6e8245769bc0fba6763179616e7fb053f20017ec", kill_on_drop: false }`
[INFO] [stdout] 0e4118ff0aabfae8cf2057fa6e8245769bc0fba6763179616e7fb053f20017ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ec12b0203f7988394decc53140657eb55987647ba6708a26a51dc1bba8f4cd6
[INFO] running `Command { std: "docker" "start" "-a" "8ec12b0203f7988394decc53140657eb55987647ba6708a26a51dc1bba8f4cd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.46/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 slab v0.4.2
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]     Checking tracing-core v0.1.30
[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" "8ec12b0203f7988394decc53140657eb55987647ba6708a26a51dc1bba8f4cd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ec12b0203f7988394decc53140657eb55987647ba6708a26a51dc1bba8f4cd6", kill_on_drop: false }`
[INFO] [stdout] 8ec12b0203f7988394decc53140657eb55987647ba6708a26a51dc1bba8f4cd6
