[INFO] fetching crate kocheck 0.4.2...
[INFO] testing kocheck-0.4.2 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate kocheck 0.4.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate kocheck 0.4.2
[INFO] finished tweaking crates.io crate kocheck 0.4.2
[INFO] tweaked toml for crates.io crate kocheck 0.4.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kocheck 0.4.2 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate kocheck 0.4.2 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84e2eb58656929ef7960749330db2d6a3b2c01e87f98f170c8f4acb4e358299b
[INFO] running `Command { std: "docker" "start" "-a" "84e2eb58656929ef7960749330db2d6a3b2c01e87f98f170c8f4acb4e358299b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84e2eb58656929ef7960749330db2d6a3b2c01e87f98f170c8f4acb4e358299b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84e2eb58656929ef7960749330db2d6a3b2c01e87f98f170c8f4acb4e358299b", kill_on_drop: false }`
[INFO] [stdout] 84e2eb58656929ef7960749330db2d6a3b2c01e87f98f170c8f4acb4e358299b
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9048ae18f3887d28cb06248a8435705b2f4e9b20ca467e6ff0f98b814382e09
[INFO] running `Command { std: "docker" "start" "-a" "b9048ae18f3887d28cb06248a8435705b2f4e9b20ca467e6ff0f98b814382e09", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling os_str_bytes v6.4.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling lazy-st v0.2.2
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/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 strsim v0.10.0
[INFO] [stderr]    Compiling nested-modules v0.2.0
[INFO] [stderr]    Compiling flume v0.10.14
[INFO] [stderr]    Compiling colosseum v0.2.2
[INFO] [stderr]    Compiling clap_lex v0.3.2
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.30
[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" "b9048ae18f3887d28cb06248a8435705b2f4e9b20ca467e6ff0f98b814382e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9048ae18f3887d28cb06248a8435705b2f4e9b20ca467e6ff0f98b814382e09", kill_on_drop: false }`
[INFO] [stdout] b9048ae18f3887d28cb06248a8435705b2f4e9b20ca467e6ff0f98b814382e09