[INFO] fetching crate turtle-syntax 6.0.0...
[INFO] testing turtle-syntax-6.0.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate turtle-syntax 6.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate turtle-syntax 6.0.0
[INFO] finished tweaking crates.io crate turtle-syntax 6.0.0
[INFO] tweaked toml for crates.io crate turtle-syntax 6.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate turtle-syntax 6.0.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate turtle-syntax 6.0.0 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a286d81ad1813920aae484de16dda777a39b2f63a60892dcd4a469f22d21ecd
[INFO] running `Command { std: "docker" "start" "-a" "0a286d81ad1813920aae484de16dda777a39b2f63a60892dcd4a469f22d21ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a286d81ad1813920aae484de16dda777a39b2f63a60892dcd4a469f22d21ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a286d81ad1813920aae484de16dda777a39b2f63a60892dcd4a469f22d21ecd", kill_on_drop: false }`
[INFO] [stdout] 0a286d81ad1813920aae484de16dda777a39b2f63a60892dcd4a469f22d21ecd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22dbb25f746b1bf1a3792a2af85ed9c72ce9728b6edcb60a5d5fd466c368d051
[INFO] running `Command { std: "docker" "start" "-a" "22dbb25f746b1bf1a3792a2af85ed9c72ce9728b6edcb60a5d5fd466c368d051", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling ryu_floating_decimal v0.1.0
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling pct-str v1.1.0
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling locspan v0.7.13
[INFO] [stderr]    Compiling langtag v0.3.4
[INFO] [stderr]    Compiling decoded-char v0.1.1
[INFO] [stderr]    Compiling iref v2.2.3
[INFO] [stderr]    Compiling pretty_dtoa v0.3.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.59/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 static-iref v2.0.0
[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" "22dbb25f746b1bf1a3792a2af85ed9c72ce9728b6edcb60a5d5fd466c368d051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22dbb25f746b1bf1a3792a2af85ed9c72ce9728b6edcb60a5d5fd466c368d051", kill_on_drop: false }`
[INFO] [stdout] 22dbb25f746b1bf1a3792a2af85ed9c72ce9728b6edcb60a5d5fd466c368d051