[INFO] fetching crate webdev 0.1.1...
[INFO] building webdev-0.1.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate webdev 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate webdev 0.1.1
[INFO] finished tweaking crates.io crate webdev 0.1.1
[INFO] tweaked toml for crates.io crate webdev 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate webdev 0.1.1 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 webdev 0.1.1 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 pin-project-internal v1.0.12
[INFO] [stderr]   Downloaded once_cell v1.15.0
[INFO] [stderr]   Downloaded kqueue v1.0.6
[INFO] [stderr]   Downloaded scoped-tls v1.0.0
[INFO] [stderr]   Downloaded buf_redux v0.8.4
[INFO] [stderr]   Downloaded socket2 v0.4.7
[INFO] [stderr]   Downloaded headers-core v0.2.0
[INFO] [stderr]   Downloaded os_str_bytes v6.3.0
[INFO] [stderr]   Downloaded tokio-util v0.7.4
[INFO] [stderr]   Downloaded futures-executor v0.3.24
[INFO] [stderr]   Downloaded filetime v0.2.17
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.12
[INFO] [stderr]   Downloaded unicode-bidi v0.3.8
[INFO] [stderr]   Downloaded headers v0.3.8
[INFO] [stderr]   Downloaded futures-io v0.3.24
[INFO] [stderr]   Downloaded futures v0.3.24
[INFO] [stderr]   Downloaded rustls-pemfile v0.2.1
[INFO] [stderr]   Downloaded futures-util v0.3.24
[INFO] [stderr]   Downloaded sha-1 v0.10.0
[INFO] [stderr]   Downloaded url v2.3.1
[INFO] [stderr]   Downloaded libc v0.2.134
[INFO] [stderr]   Downloaded h2 v0.3.14
[INFO] [stderr]   Downloaded tokio v1.21.2
[INFO] [stderr]   Downloaded idna v0.3.0
[INFO] [stderr]   Downloaded tokio-tungstenite v0.17.2
[INFO] [stderr]   Downloaded pin-project v1.0.12
[INFO] [stderr]   Downloaded futures-sink v0.3.24
[INFO] [stderr]   Downloaded lock_api v0.4.9
[INFO] [stderr]   Downloaded notify-debouncer-mini v0.2.1
[INFO] [stderr]   Downloaded clap v4.0.10
[INFO] [stderr]   Downloaded sha1 v0.10.5
[INFO] [stderr]   Downloaded twoway v0.1.8
[INFO] [stderr]   Downloaded serde v1.0.145
[INFO] [stderr]   Downloaded syn v1.0.101
[INFO] [stderr]   Downloaded kqueue-sys v1.0.3
[INFO] [stderr]   Downloaded pathdiff v0.2.1
[INFO] [stderr]   Downloaded unicase v2.6.0
[INFO] [stderr]   Downloaded mime_guess v2.0.4
[INFO] [stderr]   Downloaded tokio-stream v0.1.10
[INFO] [stderr]   Downloaded futures-macro v0.3.24
[INFO] [stderr]   Downloaded percent-encoding v2.2.0
[INFO] [stderr]   Downloaded tungstenite v0.17.3
[INFO] [stderr]   Downloaded futures-core v0.3.24
[INFO] [stderr]   Downloaded inotify v0.9.6
[INFO] [stderr]   Downloaded notify v5.0.0
[INFO] [stderr]   Downloaded safemem v0.3.3
[INFO] [stderr]   Downloaded multipart v0.18.0
[INFO] [stderr]   Downloaded httparse v1.8.0
[INFO] [stderr]   Downloaded futures-channel v0.3.24
[INFO] [stderr]   Downloaded warp v0.3.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.46
[INFO] [stderr]   Downloaded unicode-ident v1.0.4
[INFO] [stderr]   Downloaded futures-task v0.3.24
[INFO] [stderr]   Downloaded digest v0.10.5
[INFO] [stderr]   Downloaded form_urlencoded v1.1.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa25a58ea396a89c56e56ef510bf07445f28eb7235daa09e8b1a26a4e4d08747
[INFO] running `Command { std: "docker" "start" "-a" "fa25a58ea396a89c56e56ef510bf07445f28eb7235daa09e8b1a26a4e4d08747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa25a58ea396a89c56e56ef510bf07445f28eb7235daa09e8b1a26a4e4d08747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa25a58ea396a89c56e56ef510bf07445f28eb7235daa09e8b1a26a4e4d08747", kill_on_drop: false }`
[INFO] [stdout] fa25a58ea396a89c56e56ef510bf07445f28eb7235daa09e8b1a26a4e4d08747
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96e5ed292534f85dd97dfd0e6abc1ddc228be60d56a141c51a608c8fe2cd5f11
[INFO] running `Command { std: "docker" "start" "-a" "96e5ed292534f85dd97dfd0e6abc1ddc228be60d56a141c51a608c8fe2cd5f11", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling bytes v1.2.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[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] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling http v0.2.8
[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" "96e5ed292534f85dd97dfd0e6abc1ddc228be60d56a141c51a608c8fe2cd5f11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96e5ed292534f85dd97dfd0e6abc1ddc228be60d56a141c51a608c8fe2cd5f11", kill_on_drop: false }`
[INFO] [stdout] 96e5ed292534f85dd97dfd0e6abc1ddc228be60d56a141c51a608c8fe2cd5f11