[INFO] fetching crate osmon 0.7.0...
[INFO] testing osmon-0.7.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate osmon 0.7.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate osmon 0.7.0
[INFO] finished tweaking crates.io crate osmon 0.7.0
[INFO] tweaked toml for crates.io crate osmon 0.7.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate osmon 0.7.0 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 osmon 0.7.0 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8701770dc0039295f00c9a4f27459a6fc2b4018865238426e806e12769e9d20
[INFO] running `Command { std: "docker" "start" "-a" "a8701770dc0039295f00c9a4f27459a6fc2b4018865238426e806e12769e9d20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8701770dc0039295f00c9a4f27459a6fc2b4018865238426e806e12769e9d20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8701770dc0039295f00c9a4f27459a6fc2b4018865238426e806e12769e9d20", kill_on_drop: false }`
[INFO] [stdout] a8701770dc0039295f00c9a4f27459a6fc2b4018865238426e806e12769e9d20
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e3a960472207040cb2f2e2b7c4e5a6b1dfc34e270b629415a45ca315e3fbeeb
[INFO] running `Command { std: "docker" "start" "-a" "4e3a960472207040cb2f2e2b7c4e5a6b1dfc34e270b629415a45ca315e3fbeeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]    Compiling gimli v0.27.2
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling object v0.30.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling aho-corasick v1.0.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling bindgen v0.49.4
[INFO] [stderr]    Compiling rustix v0.37.15
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling addr2line v0.19.0
[INFO] [stderr]    Compiling linux-raw-sys v0.3.4
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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 regex v1.8.1
[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" "4e3a960472207040cb2f2e2b7c4e5a6b1dfc34e270b629415a45ca315e3fbeeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e3a960472207040cb2f2e2b7c4e5a6b1dfc34e270b629415a45ca315e3fbeeb", kill_on_drop: false }`
[INFO] [stdout] 4e3a960472207040cb2f2e2b7c4e5a6b1dfc34e270b629415a45ca315e3fbeeb