[INFO] cloning repository https://github.com/BlackPhlox/potoo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BlackPhlox/potoo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlackPhlox%2Fpotoo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlackPhlox%2Fpotoo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5cc0b865aabb977a3be0b55179974da873d44067
[INFO] checking BlackPhlox/potoo against master#3f6250a7bb79e600d9036bbc7c8f65af43933643 for pr-147859
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlackPhlox%2Fpotoo" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/BlackPhlox/potoo
[INFO] finished tweaking git repo https://github.com/BlackPhlox/potoo
[INFO] tweaked toml for git repo https://github.com/BlackPhlox/potoo written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BlackPhlox/potoo on toolchain 3f6250a7bb79e600d9036bbc7c8f65af43933643
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/BlackPhlox/potoo 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" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded codegen v0.2.0
[INFO] [stderr]   Downloaded rust-format v0.3.4
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68296a7e5f89c5c19a4c7696836d897c3e0f9f47526d59536a0dc265c8ccf1c3
[INFO] running `Command { std: "docker" "start" "-a" "68296a7e5f89c5c19a4c7696836d897c3e0f9f47526d59536a0dc265c8ccf1c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68296a7e5f89c5c19a4c7696836d897c3e0f9f47526d59536a0dc265c8ccf1c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68296a7e5f89c5c19a4c7696836d897c3e0f9f47526d59536a0dc265c8ccf1c3", kill_on_drop: false }`
[INFO] [stdout] 68296a7e5f89c5c19a4c7696836d897c3e0f9f47526d59536a0dc265c8ccf1c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+3f6250a7bb79e600d9036bbc7c8f65af43933643" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ecb4b111bea9fbb49c078ff02bd4574bffa0f05c4495ef23339993df2405d9e
[INFO] running `Command { std: "docker" "start" "-a" "8ecb4b111bea9fbb49c078ff02bd4574bffa0f05c4495ef23339993df2405d9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.58
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling toml_datetime v0.6.2
[INFO] [stderr]    Compiling winnow v0.4.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling erased-serde v0.3.25
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking bevy_ptr v0.10.1
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.58/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking simd-adler32 v0.3.5
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking walkdir v2.3.3
[INFO] [stderr]     Checking async-channel v1.8.0
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking unicode-xid v0.2.4
[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" "8ecb4b111bea9fbb49c078ff02bd4574bffa0f05c4495ef23339993df2405d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ecb4b111bea9fbb49c078ff02bd4574bffa0f05c4495ef23339993df2405d9e", kill_on_drop: false }`
[INFO] [stdout] 8ecb4b111bea9fbb49c078ff02bd4574bffa0f05c4495ef23339993df2405d9e
