[INFO] fetching crate ressa 0.9.0-alpha.3...
[INFO] building ressa-0.9.0-alpha.3 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate ressa 0.9.0-alpha.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate ressa 0.9.0-alpha.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ressa 0.9.0-alpha.3
[INFO] tweaked toml for crates.io crate ressa 0.9.0-alpha.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ressa 0.9.0-alpha.3 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 ressa 0.9.0-alpha.3 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded dirs v2.0.2
[INFO] [stderr]   Downloaded tracing-attributes v0.1.23
[INFO] [stderr]   Downloaded serde_yaml v0.9.14
[INFO] [stderr]   Downloaded ciborium-io v0.2.0
[INFO] [stderr]   Downloaded plotters-svg v0.3.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.47
[INFO] [stderr]   Downloaded unic-char-property v0.9.0
[INFO] [stderr]   Downloaded unic-ucd-version v0.9.0
[INFO] [stderr]   Downloaded ciborium-ll v0.2.0
[INFO] [stderr]   Downloaded unsafe-libyaml v0.2.4
[INFO] [stderr]   Downloaded os_str_bytes v6.4.1
[INFO] [stderr]   Downloaded oorandom v11.1.3
[INFO] [stderr]   Downloaded ciborium v0.2.0
[INFO] [stderr]   Downloaded textwrap v0.16.0
[INFO] [stderr]   Downloaded docopt v1.1.1
[INFO] [stderr]   Downloaded serde_json v1.0.89
[INFO] [stderr]   Downloaded plotters v0.3.4
[INFO] [stderr]   Downloaded num_cpus v1.14.0
[INFO] [stderr]   Downloaded bumpalo v3.11.1
[INFO] [stderr]   Downloaded clap v3.2.23
[INFO] [stderr]   Downloaded similar v2.2.1
[INFO] [stderr]   Downloaded resast v0.6.0-alpha.5
[INFO] [stderr]   Downloaded rayon v1.6.0
[INFO] [stderr]   Downloaded plotters-backend v0.3.4
[INFO] [stderr]   Downloaded libc v0.2.137
[INFO] [stderr]   Downloaded unic-common v0.9.0
[INFO] [stderr]   Downloaded ress v0.11.6
[INFO] [stderr]   Downloaded rayon-core v1.10.1
[INFO] [stderr]   Downloaded res-regex v0.1.4
[INFO] [stderr]   Downloaded insta v1.21.1
[INFO] [stderr]   Downloaded hash-chain v0.3.2
[INFO] [stderr]   Downloaded unic-char-range v0.9.0
[INFO] [stderr]   Downloaded unic-ucd-ident v0.9.0
[INFO] [stderr]   Downloaded term-painter v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6805d348ba43041c6015bda20329ce47bfc89da1ffd4fffc1257a187a8e7bb0c
[INFO] running `Command { std: "docker" "start" "-a" "6805d348ba43041c6015bda20329ce47bfc89da1ffd4fffc1257a187a8e7bb0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6805d348ba43041c6015bda20329ce47bfc89da1ffd4fffc1257a187a8e7bb0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6805d348ba43041c6015bda20329ce47bfc89da1ffd4fffc1257a187a8e7bb0c", kill_on_drop: false }`
[INFO] [stdout] 6805d348ba43041c6015bda20329ce47bfc89da1ffd4fffc1257a187a8e7bb0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] cd889b226c2a3f25384d1525ef82137a839d5fdbf7eb48066a867cb99b7c46fe
[INFO] running `Command { std: "docker" "start" "-a" "cd889b226c2a3f25384d1525ef82137a839d5fdbf7eb48066a867cb99b7c46fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling unic-char-range v0.9.0
[INFO] [stderr]    Compiling unic-common v0.9.0
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling resast v0.6.0-alpha.5
[INFO] [stderr]    Compiling hash-chain v0.3.2
[INFO] [stderr]    Compiling unic-ucd-version v0.9.0
[INFO] [stderr]    Compiling unic-char-property v0.9.0
[INFO] [stderr]    Compiling ress v0.11.6
[INFO] [stderr]    Compiling unic-ucd-ident v0.9.0
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling res-regex v0.1.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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" "cd889b226c2a3f25384d1525ef82137a839d5fdbf7eb48066a867cb99b7c46fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd889b226c2a3f25384d1525ef82137a839d5fdbf7eb48066a867cb99b7c46fe", kill_on_drop: false }`
[INFO] [stdout] cd889b226c2a3f25384d1525ef82137a839d5fdbf7eb48066a867cb99b7c46fe