[INFO] fetching crate xous-log 0.1.27...
[INFO] checking xous-log-0.1.27 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate xous-log 0.1.27 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate xous-log 0.1.27 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xous-log 0.1.27
[INFO] finished tweaking crates.io crate xous-log 0.1.27
[INFO] tweaked toml for crates.io crate xous-log 0.1.27 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate xous-log 0.1.27 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.52
[INFO] [stderr]   Downloaded ptr_meta_derive v0.1.4
[INFO] [stderr]   Downloaded ptr_meta v0.1.4
[INFO] [stderr]   Downloaded rkyv_derive v0.4.0
[INFO] [stderr]   Downloaded rkyv v0.4.3
[INFO] [stderr]   Downloaded xous v0.9.35
[INFO] [stderr]   Downloaded quick-xml v0.19.0
[INFO] [stderr]   Downloaded svd2utra v0.1.13
[INFO] [stderr]   Downloaded xous-api-log v0.1.30
[INFO] [stderr]   Downloaded xous-ipc v0.9.35
[INFO] [stderr]   Downloaded utralib v0.1.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd7bb11184dca081ead9b0d216fbaf78b583636f4f20491d263c10a5104a253a
[INFO] running `Command { std: "docker" "start" "-a" "dd7bb11184dca081ead9b0d216fbaf78b583636f4f20491d263c10a5104a253a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd7bb11184dca081ead9b0d216fbaf78b583636f4f20491d263c10a5104a253a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd7bb11184dca081ead9b0d216fbaf78b583636f4f20491d263c10a5104a253a", kill_on_drop: false }`
[INFO] [stdout] dd7bb11184dca081ead9b0d216fbaf78b583636f4f20491d263c10a5104a253a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f89f99afd88b49d4755d7fca65e94025b8c148e3c011812e4abc801831470602
[INFO] running `Command { std: "docker" "start" "-a" "f89f99afd88b49d4755d7fca65e94025b8c148e3c011812e4abc801831470602", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling rkyv v0.4.3
[INFO] [stderr]    Compiling xous v0.9.35
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.52/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" "f89f99afd88b49d4755d7fca65e94025b8c148e3c011812e4abc801831470602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f89f99afd88b49d4755d7fca65e94025b8c148e3c011812e4abc801831470602", kill_on_drop: false }`
[INFO] [stdout] f89f99afd88b49d4755d7fca65e94025b8c148e3c011812e4abc801831470602