[INFO] fetching crate carrot-cake 0.1.4...
[INFO] checking carrot-cake-0.1.4 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate carrot-cake 0.1.4 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate carrot-cake 0.1.4
[INFO] finished tweaking crates.io crate carrot-cake 0.1.4
[INFO] tweaked toml for crates.io crate carrot-cake 0.1.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate carrot-cake 0.1.4 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate carrot-cake 0.1.4 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde-aux v4.2.0
[INFO] [stderr]   Downloaded redact v0.1.4
[INFO] [stderr]   Downloaded tokio-executor-trait v2.1.1
[INFO] [stderr]   Downloaded executor-trait v2.1.0
[INFO] [stderr]   Downloaded shutdown-handler v0.1.0
[INFO] [stderr]   Downloaded rc2 v0.8.1
[INFO] [stderr]   Downloaded rustls-native-certs v0.6.2
[INFO] [stderr]   Downloaded p12 v0.6.3
[INFO] [stderr]   Downloaded cpufeatures v0.2.6
[INFO] [stderr]   Downloaded anyhow v1.0.70
[INFO] [stderr]   Downloaded blocking v1.3.0
[INFO] [stderr]   Downloaded polling v2.6.0
[INFO] [stderr]   Downloaded schannel v0.1.21
[INFO] [stderr]   Downloaded fake v2.6.1
[INFO] [stderr]   Downloaded openssl v0.10.54
[INFO] [stderr]   Downloaded lapin v2.1.1
[INFO] [stderr]   Downloaded openssl-sys v0.9.88
[INFO] [stderr]   Downloaded serde_json v1.0.95
[INFO] [stderr]   Downloaded deadpool-runtime v0.1.2
[INFO] [stderr]   Downloaded deadpool v0.9.5
[INFO] [stderr]   Downloaded des v0.8.1
[INFO] [stderr]   Downloaded security-framework v2.8.2
[INFO] [stderr]   Downloaded rustix v0.37.13
[INFO] [stderr]   Downloaded yasna v0.5.1
[INFO] [stderr]   Downloaded tcp-stream v0.24.4
[INFO] [stderr]   Downloaded amq-protocol-tcp v7.0.1
[INFO] [stderr]   Downloaded async-global-executor-trait v2.1.0
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.2
[INFO] [stderr]   Downloaded amq-protocol-types v7.0.1
[INFO] [stderr]   Downloaded pinky-swear v6.1.0
[INFO] [stderr]   Downloaded reactor-trait v1.1.0
[INFO] [stderr]   Downloaded security-framework-sys v2.8.0
[INFO] [stderr]   Downloaded tempfile v3.6.0
[INFO] [stderr]   Downloaded serde v1.0.159
[INFO] [stderr]   Downloaded amq-protocol v7.0.1
[INFO] [stderr]   Downloaded amq-protocol-uri v7.0.1
[INFO] [stderr]   Downloaded atomic-waker v1.1.0
[INFO] [stderr]   Downloaded async-reactor-trait v1.1.0
[INFO] [stderr]   Downloaded serde_derive v1.0.159
[INFO] [stderr]   Downloaded rustls-connector v0.16.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4daf94d3a8f97703ef5888cd8048b280ae68f5eb5ddd254964335af653beda4b
[INFO] running `Command { std: "docker" "start" "-a" "4daf94d3a8f97703ef5888cd8048b280ae68f5eb5ddd254964335af653beda4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4daf94d3a8f97703ef5888cd8048b280ae68f5eb5ddd254964335af653beda4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4daf94d3a8f97703ef5888cd8048b280ae68f5eb5ddd254964335af653beda4b", kill_on_drop: false }`
[INFO] [stdout] 4daf94d3a8f97703ef5888cd8048b280ae68f5eb5ddd254964335af653beda4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d7a62dd56d3e93edf7ad069a2bae6e50ba7dadc202d7907b1678d5f704efa64
[INFO] running `Command { std: "docker" "start" "-a" "5d7a62dd56d3e93edf7ad069a2bae6e50ba7dadc202d7907b1678d5f704efa64", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.159
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]     Checking typenum v1.16.0
[INFO] [stderr]    Compiling openssl-sys v0.9.88
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]    Compiling serde_json v1.0.95
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[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]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking indexmap v1.9.3
[INFO] [stderr]    Compiling polling v2.6.0
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling rustix v0.37.13
[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" "5d7a62dd56d3e93edf7ad069a2bae6e50ba7dadc202d7907b1678d5f704efa64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d7a62dd56d3e93edf7ad069a2bae6e50ba7dadc202d7907b1678d5f704efa64", kill_on_drop: false }`
[INFO] [stdout] 5d7a62dd56d3e93edf7ad069a2bae6e50ba7dadc202d7907b1678d5f704efa64