[INFO] fetching crate horcrust 1.2.1...
[INFO] checking horcrust-1.2.1 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate horcrust 1.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate horcrust 1.2.1 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate horcrust 1.2.1
[INFO] finished tweaking crates.io crate horcrust 1.2.1
[INFO] tweaked toml for crates.io crate horcrust 1.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate horcrust 1.2.1 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5f49221de06f66e411162fc5ec7b181d64666df1f59a806e818ef1f37ae63b2
[INFO] running `Command { std: "docker" "start" "-a" "a5f49221de06f66e411162fc5ec7b181d64666df1f59a806e818ef1f37ae63b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5f49221de06f66e411162fc5ec7b181d64666df1f59a806e818ef1f37ae63b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f49221de06f66e411162fc5ec7b181d64666df1f59a806e818ef1f37ae63b2", kill_on_drop: false }`
[INFO] [stdout] a5f49221de06f66e411162fc5ec7b181d64666df1f59a806e818ef1f37ae63b2
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd4a0af8ddd605a66e130380be9a5db9aca1c3ab12bc58dca49c57151bd4d964
[INFO] running `Command { std: "docker" "start" "-a" "fd4a0af8ddd605a66e130380be9a5db9aca1c3ab12bc58dca49c57151bd4d964", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling serde_derive v1.0.162
[INFO] [stderr]     Checking linux-raw-sys v0.3.7
[INFO] [stderr]    Compiling serde v1.0.162
[INFO] [stderr]     Checking cpufeatures v0.2.7
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking anstyle-parse v0.2.0
[INFO] [stderr]     Checking anstyle v1.0.0
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking clap_lex v0.4.1
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking universal-hash v0.5.1
[INFO] [stderr]     Checking aead v0.5.2
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking poly1305 v0.8.0
[INFO] [stderr]     Checking rand v0.8.5
[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 sha2 v0.10.7
[INFO] [stderr]     Checking chacha20 v0.9.1
[INFO] [stderr]     Checking chacha20poly1305 v0.10.1
[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] 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" "fd4a0af8ddd605a66e130380be9a5db9aca1c3ab12bc58dca49c57151bd4d964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd4a0af8ddd605a66e130380be9a5db9aca1c3ab12bc58dca49c57151bd4d964", kill_on_drop: false }`
[INFO] [stdout] fd4a0af8ddd605a66e130380be9a5db9aca1c3ab12bc58dca49c57151bd4d964
