[INFO] fetching crate hls_lfcd_lds_driver 0.1.7...
[INFO] testing hls_lfcd_lds_driver-0.1.7 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate hls_lfcd_lds_driver 0.1.7 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate hls_lfcd_lds_driver 0.1.7
[INFO] finished tweaking crates.io crate hls_lfcd_lds_driver 0.1.7
[INFO] tweaked toml for crates.io crate hls_lfcd_lds_driver 0.1.7 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hls_lfcd_lds_driver 0.1.7 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate hls_lfcd_lds_driver 0.1.7 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pkg-config v0.3.25
[INFO] [stderr]   Downloaded gloo-timers v0.2.4
[INFO] [stderr]   Downloaded serde-big-array v0.4.1
[INFO] [stderr]   Downloaded value-bag v1.0.0-alpha.9
[INFO] [stderr]   Downloaded async-global-executor v2.0.4
[INFO] [stderr]   Downloaded clap_derive v4.0.8
[INFO] [stderr]   Downloaded blocking v1.2.0
[INFO] [stderr]   Downloaded serialport v4.1.0
[INFO] [stderr]   Downloaded smol v1.2.5
[INFO] [stderr]   Downloaded ctrlc v3.2.2
[INFO] [stderr]   Downloaded async-fs v1.5.0
[INFO] [stderr]   Downloaded async-net v1.6.1
[INFO] [stderr]   Downloaded async-process v1.4.0
[INFO] [stderr]   Downloaded unicode-ident v1.0.4
[INFO] [stderr]   Downloaded clap v4.0.8
[INFO] [stderr]   Downloaded tokio-serial v5.4.3
[INFO] [stderr]   Downloaded nix v0.23.1
[INFO] [stderr]   Downloaded nix v0.24.1
[INFO] [stderr]   Downloaded mio-serial v5.0.2
[INFO] [stderr]   Downloaded tokio v1.18.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab15e9f2e828ed4f12ebdf7eb5014ff2b3ded9102582b2dc85bd4c9dc5b987aa
[INFO] running `Command { std: "docker" "start" "-a" "ab15e9f2e828ed4f12ebdf7eb5014ff2b3ded9102582b2dc85bd4c9dc5b987aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab15e9f2e828ed4f12ebdf7eb5014ff2b3ded9102582b2dc85bd4c9dc5b987aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab15e9f2e828ed4f12ebdf7eb5014ff2b3ded9102582b2dc85bd4c9dc5b987aa", kill_on_drop: false }`
[INFO] [stdout] ab15e9f2e828ed4f12ebdf7eb5014ff2b3ded9102582b2dc85bd4c9dc5b987aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2a46ab9f4b2b298519afa2e036bc45c5a66e62d0bf00bd5e3534a7b154b7d7b
[INFO] running `Command { std: "docker" "start" "-a" "e2a46ab9f4b2b298519afa2e036bc45c5a66e62d0bf00bd5e3534a7b154b7d7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/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] [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" "e2a46ab9f4b2b298519afa2e036bc45c5a66e62d0bf00bd5e3534a7b154b7d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2a46ab9f4b2b298519afa2e036bc45c5a66e62d0bf00bd5e3534a7b154b7d7b", kill_on_drop: false }`
[INFO] [stdout] e2a46ab9f4b2b298519afa2e036bc45c5a66e62d0bf00bd5e3534a7b154b7d7b