[INFO] cloning repository https://github.com/coriolinus/adventofcode-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/coriolinus/adventofcode-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoriolinus%2Fadventofcode-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoriolinus%2Fadventofcode-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 03c4f8e2e69dfbb2d14884bc5e07707047c410ca
[INFO] checking coriolinus/adventofcode-2020 against master#ddaf12390d3ffb7d5ba74491a48f3cd528e5d777 for pr-146504
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoriolinus%2Fadventofcode-2020" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/coriolinus/adventofcode-2020
[INFO] finished tweaking git repo https://github.com/coriolinus/adventofcode-2020
[INFO] tweaked toml for git repo https://github.com/coriolinus/adventofcode-2020 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/coriolinus/adventofcode-2020 on toolchain ddaf12390d3ffb7d5ba74491a48f3cd528e5d777
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddaf12390d3ffb7d5ba74491a48f3cd528e5d777" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/coriolinus/adventofcode-2020 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" "+ddaf12390d3ffb7d5ba74491a48f3cd528e5d777" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded const_fn v0.4.10
[INFO] [stderr]   Downloaded sha1_smol v1.0.1
[INFO] [stderr]   Downloaded tracing-error v0.1.2
[INFO] [stderr]   Downloaded owo-colors v1.3.0
[INFO] [stderr]   Downloaded parse-display v0.4.1
[INFO] [stderr]   Downloaded parse-display-derive v0.4.1
[INFO] [stderr]   Downloaded structopt v0.3.26
[INFO] [stderr]   Downloaded counter v0.5.7
[INFO] [stderr]   Downloaded async-compression v0.3.15
[INFO] [stderr]   Downloaded cc v1.1.6
[INFO] [stderr]   Downloaded cookie v0.14.4
[INFO] [stderr]   Downloaded cookie_store v0.12.0
[INFO] [stderr]   Downloaded num v0.3.1
[INFO] [stderr]   Downloaded toml_edit v0.2.1
[INFO] [stderr]   Downloaded color-spantrace v0.1.6
[INFO] [stderr]   Downloaded bitvec v0.19.6
[INFO] [stderr]   Downloaded color-eyre v0.5.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddaf12390d3ffb7d5ba74491a48f3cd528e5d777" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef5dc41e0a307b4bedc7b9a74e42d780a91fb0f47a3fd137055ed4229da6fbda
[INFO] running `Command { std: "docker" "start" "-a" "ef5dc41e0a307b4bedc7b9a74e42d780a91fb0f47a3fd137055ed4229da6fbda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef5dc41e0a307b4bedc7b9a74e42d780a91fb0f47a3fd137055ed4229da6fbda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef5dc41e0a307b4bedc7b9a74e42d780a91fb0f47a3fd137055ed4229da6fbda", kill_on_drop: false }`
[INFO] [stdout] ef5dc41e0a307b4bedc7b9a74e42d780a91fb0f47a3fd137055ed4229da6fbda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddaf12390d3ffb7d5ba74491a48f3cd528e5d777" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d301b8af630ff511b88e35018171d2b5e00ca1ca6381c16a539fbb7602b133c
[INFO] running `Command { std: "docker" "start" "-a" "6d301b8af630ff511b88e35018171d2b5e00ca1ca6381c16a539fbb7602b133c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling cc v1.1.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling syn v2.0.71
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling const_fn v0.4.10
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling cookie v0.14.4
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling openssl-sys v0.9.103
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking publicsuffix v1.5.6
[INFO] [stderr]     Checking owo-colors v1.3.0
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling openssl v0.10.66
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking async-compression v0.3.15
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/ddaf12390d3ffb7d5ba74491a48f3cd528e5d777/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.71/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=88d407db3ba70865 -C extra-filename=-1b711c5ca3aed26a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-90f4d189e3c1781a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-ea54d792119c380c.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-f2de522ba645d884.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6d301b8af630ff511b88e35018171d2b5e00ca1ca6381c16a539fbb7602b133c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d301b8af630ff511b88e35018171d2b5e00ca1ca6381c16a539fbb7602b133c", kill_on_drop: false }`
[INFO] [stdout] 6d301b8af630ff511b88e35018171d2b5e00ca1ca6381c16a539fbb7602b133c