[INFO] cloning repository https://github.com/guardian/giant-utils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/guardian/giant-utils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguardian%2Fgiant-utils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguardian%2Fgiant-utils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 24d9bd60dc5496be6b247a905e30992b1063c34e
[INFO] checking guardian/giant-utils against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113242
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguardian%2Fgiant-utils" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guardian/giant-utils on toolchain 6162f6f12339aa81fe16b8a64644ead497e411b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/guardian/giant-utils
[INFO] finished tweaking git repo https://github.com/guardian/giant-utils
[INFO] tweaked toml for git repo https://github.com/guardian/giant-utils written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/guardian/giant-utils 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" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustls-native-certs v0.5.0
[INFO] [stderr]   Downloaded indicatif v0.17.1
[INFO] [stderr]   Downloaded quote v0.4.2
[INFO] [stderr]   Downloaded aws-sigv4 v0.46.0
[INFO] [stderr]   Downloaded aws-smithy-client v0.46.0
[INFO] [stderr]   Downloaded aws-smithy-http v0.46.0
[INFO] [stderr]   Downloaded aws-smithy-query v0.46.0
[INFO] [stderr]   Downloaded aws-smithy-xml v0.46.0
[INFO] [stderr]   Downloaded aws-sdk-sso v0.16.0
[INFO] [stderr]   Downloaded aws-sig-auth v0.46.0
[INFO] [stderr]   Downloaded aws-smithy-json v0.46.0
[INFO] [stderr]   Downloaded proc-macro2 v0.2.3
[INFO] [stderr]   Downloaded syn v0.12.15
[INFO] [stderr]   Downloaded clap v3.2.23
[INFO] [stderr]   Downloaded flashmap v0.1.0
[INFO] [stderr]   Downloaded aws-sdk-s3 v0.16.0
[INFO] [stderr]   Downloaded libc v0.2.136
[INFO] [stderr]   Downloaded reflection v0.1.3
[INFO] [stderr]   Downloaded aws-smithy-types v0.46.0
[INFO] [stderr]   Downloaded aws-sdk-sts v0.16.0
[INFO] [stderr]   Downloaded aws-config v0.46.0
[INFO] [stderr]   Downloaded serde_derive_internals v0.21.0
[INFO] [stderr]   Downloaded reflection_derive v0.1.1
[INFO] [stderr]   Downloaded ct-logs v0.8.0
[INFO] [stderr]   Downloaded bytes-utils v0.1.3
[INFO] [stderr]   Downloaded indexed v0.1.1
[INFO] [stderr]   Downloaded aws-http v0.46.0
[INFO] [stderr]   Downloaded hyper-rustls v0.22.1
[INFO] [stderr]   Downloaded aws-smithy-eventstream v0.46.0
[INFO] [stderr]   Downloaded aws-types v0.46.0
[INFO] [stderr]   Downloaded aws-smithy-async v0.46.0
[INFO] [stderr]   Downloaded aws-smithy-http-tower v0.46.0
[INFO] [stderr]   Downloaded aws-endpoint v0.46.0
[INFO] [stderr]   Downloaded tsv v0.1.1
[INFO] [stderr]   Downloaded trees v0.2.1
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] faa365e6f47bfeadd514137a2eef7fd2ed4fadd44eec787506adfbc222d09f2c
[INFO] running `Command { std: "docker" "start" "-a" "faa365e6f47bfeadd514137a2eef7fd2ed4fadd44eec787506adfbc222d09f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "faa365e6f47bfeadd514137a2eef7fd2ed4fadd44eec787506adfbc222d09f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faa365e6f47bfeadd514137a2eef7fd2ed4fadd44eec787506adfbc222d09f2c", kill_on_drop: false }`
[INFO] [stdout] faa365e6f47bfeadd514137a2eef7fd2ed4fadd44eec787506adfbc222d09f2c
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caa9c9b3150c3fef2a54208c0755c0703945dc8c8f936e680d0c648722c56c4f
[INFO] running `Command { std: "docker" "start" "-a" "caa9c9b3150c3fef2a54208c0755c0703945dc8c8f936e680d0c648722c56c4f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.136
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]     Checking bytes-utils v0.1.3
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]    Compiling openssl-sys v0.9.77
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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 serde_derive v1.0.147
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stdout] error: aborting due to 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" "caa9c9b3150c3fef2a54208c0755c0703945dc8c8f936e680d0c648722c56c4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caa9c9b3150c3fef2a54208c0755c0703945dc8c8f936e680d0c648722c56c4f", kill_on_drop: false }`
[INFO] [stdout] caa9c9b3150c3fef2a54208c0755c0703945dc8c8f936e680d0c648722c56c4f