[INFO] cloning repository https://github.com/avj2352/rust_digital_garden
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/avj2352/rust_digital_garden" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favj2352%2Frust_digital_garden", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favj2352%2Frust_digital_garden'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 29eb899a1be3fa6af45f4a45008808bb427c65bf
[INFO] checking avj2352/rust_digital_garden/29eb899a1be3fa6af45f4a45008808bb427c65bf against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favj2352%2Frust_digital_garden" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/avj2352/rust_digital_garden on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/avj2352/rust_digital_garden
[INFO] finished tweaking git repo https://github.com/avj2352/rust_digital_garden
[INFO] tweaked toml for git repo https://github.com/avj2352/rust_digital_garden written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/avj2352/rust_digital_garden 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded which v4.4.0
[INFO] [stderr]   Downloaded rprompt v1.0.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.56
[INFO] [stderr]   Downloaded edit v0.1.4
[INFO] [stderr]   Downloaded assert_fs v1.0.12
[INFO] [stderr]   Downloaded owo-colors v1.3.0
[INFO] [stderr]   Downloaded anstyle v0.3.5
[INFO] [stderr]   Downloaded globset v0.4.10
[INFO] [stderr]   Downloaded assert_cmd v1.0.8
[INFO] [stderr]   Downloaded predicates v3.0.2
[INFO] [stderr]   Downloaded ignore v0.4.20
[INFO] [stderr]   Downloaded serde v1.0.159
[INFO] [stderr]   Downloaded rustc-demangle v0.1.22
[INFO] [stderr]   Downloaded io-lifetimes v1.0.10
[INFO] [stderr]   Downloaded tempfile v3.5.0
[INFO] [stderr]   Downloaded errno v0.3.0
[INFO] [stderr]   Downloaded tracing-error v0.1.2
[INFO] [stderr]   Downloaded color-spantrace v0.1.6
[INFO] [stderr]   Downloaded regex v1.7.3
[INFO] [stderr]   Downloaded directories v3.0.2
[INFO] [stderr]   Downloaded syn v2.0.13
[INFO] [stderr]   Downloaded rustix v0.37.8
[INFO] [stderr]   Downloaded bstr v1.4.0
[INFO] [stderr]   Downloaded libc v0.2.141
[INFO] [stderr]   Downloaded color-eyre v0.5.11
[INFO] [stderr]   Downloaded linux-raw-sys v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9d3595025a18efd7bdee96c42cf2aca82908cb2e26e7dbf5105e3591be78d91
[INFO] running `Command { std: "docker" "start" "-a" "a9d3595025a18efd7bdee96c42cf2aca82908cb2e26e7dbf5105e3591be78d91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9d3595025a18efd7bdee96c42cf2aca82908cb2e26e7dbf5105e3591be78d91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d3595025a18efd7bdee96c42cf2aca82908cb2e26e7dbf5105e3591be78d91", kill_on_drop: false }`
[INFO] [stdout] a9d3595025a18efd7bdee96c42cf2aca82908cb2e26e7dbf5105e3591be78d91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 520f1d1c5ff4c93d36bef53d3934798c608a9173e0fff964facca80dfce1e147
[INFO] running `Command { std: "docker" "start" "-a" "520f1d1c5ff4c93d36bef53d3934798c608a9173e0fff964facca80dfce1e147", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling rustix v0.37.8
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking predicates-core v1.0.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking linux-raw-sys v0.3.1
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/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]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]     Checking bstr v1.4.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "520f1d1c5ff4c93d36bef53d3934798c608a9173e0fff964facca80dfce1e147", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "520f1d1c5ff4c93d36bef53d3934798c608a9173e0fff964facca80dfce1e147", kill_on_drop: false }`
[INFO] [stdout] 520f1d1c5ff4c93d36bef53d3934798c608a9173e0fff964facca80dfce1e147