[INFO] fetching crate xous-log 0.1.27...
[INFO] building xous-log-0.1.27 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate xous-log 0.1.27 into /workspace/builds/worker-3-tc1/source
[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-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xous-log 0.1.27 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rkyv_derive v0.4.0
[INFO] [stderr]   Downloaded xous-api-log v0.1.30
[INFO] [stderr]   Downloaded xous-ipc v0.9.35
[INFO] [stderr]   Downloaded xous v0.9.35
[INFO] [stderr]   Downloaded svd2utra v0.1.13
[INFO] [stderr]   Downloaded proc-macro2 v1.0.52
[INFO] [stderr]   Downloaded rkyv v0.4.3
[INFO] [stderr]   Downloaded quick-xml v0.19.0
[INFO] [stderr]   Downloaded utralib v0.1.15
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1fb0b8c3e677344e5e631ce8adca8ed574b48e0b6a5ad05ddaffed5fc32ced1a
[INFO] running `Command { std: "docker" "start" "-a" "1fb0b8c3e677344e5e631ce8adca8ed574b48e0b6a5ad05ddaffed5fc32ced1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1fb0b8c3e677344e5e631ce8adca8ed574b48e0b6a5ad05ddaffed5fc32ced1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fb0b8c3e677344e5e631ce8adca8ed574b48e0b6a5ad05ddaffed5fc32ced1a", kill_on_drop: false }`
[INFO] [stdout] 1fb0b8c3e677344e5e631ce8adca8ed574b48e0b6a5ad05ddaffed5fc32ced1a
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7d0d723792eaddc7c5fc27b11870777f2aa37b12d525b4c7a475f8dff518c67
[INFO] running `Command { std: "docker" "start" "-a" "d7d0d723792eaddc7c5fc27b11870777f2aa37b12d525b4c7a475f8dff518c67", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling xous v0.9.35
[INFO] [stderr]    Compiling rkyv v0.4.3
[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-1949cf8c6b5b557f/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] 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" "d7d0d723792eaddc7c5fc27b11870777f2aa37b12d525b4c7a475f8dff518c67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7d0d723792eaddc7c5fc27b11870777f2aa37b12d525b4c7a475f8dff518c67", kill_on_drop: false }`
[INFO] [stdout] d7d0d723792eaddc7c5fc27b11870777f2aa37b12d525b4c7a475f8dff518c67