[INFO] fetching crate rjrssync 0.2.7...
[INFO] testing rjrssync-0.2.7 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate rjrssync 0.2.7 into /workspace/builds/worker-3-tc2/source
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rjrssync 0.2.7
[INFO] removed 0 missing examples
[INFO] removed 1 missing tests
[INFO] finished tweaking crates.io crate rjrssync 0.2.7
[INFO] tweaked toml for crates.io crate rjrssync 0.2.7 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rjrssync 0.2.7 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rjrssync 0.2.7 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a8c3c5d37f1fda347f638317f0a9be0a47ab14714663f785851de8359472560
[INFO] running `Command { std: "docker" "start" "-a" "4a8c3c5d37f1fda347f638317f0a9be0a47ab14714663f785851de8359472560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a8c3c5d37f1fda347f638317f0a9be0a47ab14714663f785851de8359472560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a8c3c5d37f1fda347f638317f0a9be0a47ab14714663f785851de8359472560", kill_on_drop: false }`
[INFO] [stdout] 4a8c3c5d37f1fda347f638317f0a9be0a47ab14714663f785851de8359472560
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b904462171bbd4bc5a5aab5181919b55a36ef2f734306c59b10c709ac4133be
[INFO] running `Command { std: "docker" "start" "-a" "6b904462171bbd4bc5a5aab5181919b55a36ef2f734306c59b10c709ac4133be", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling rustix v0.36.6
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling portable-atomic v0.3.19
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling lazy_static v1.4.0
[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 crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling os_str_bytes v6.4.1
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling clap_lex v0.3.1
[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" "6b904462171bbd4bc5a5aab5181919b55a36ef2f734306c59b10c709ac4133be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b904462171bbd4bc5a5aab5181919b55a36ef2f734306c59b10c709ac4133be", kill_on_drop: false }`
[INFO] [stdout] 6b904462171bbd4bc5a5aab5181919b55a36ef2f734306c59b10c709ac4133be