[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] 7270a677483a300af34798e812b5207435f3c263
[INFO] checking coriolinus/adventofcode-2020 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoriolinus%2Fadventofcode-2020" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/coriolinus/adventofcode-2020 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/coriolinus/adventofcode-2020
[INFO] removed workspace from 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-6/source/Cargo.toml
[INFO] crate git repo https://github.com/coriolinus/adventofcode-2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed805c3a2ab25bbd5df031177bd77adcc0692ba2b2e180a8944fac9b01f4cf1a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ed805c3a2ab25bbd5df031177bd77adcc0692ba2b2e180a8944fac9b01f4cf1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed805c3a2ab25bbd5df031177bd77adcc0692ba2b2e180a8944fac9b01f4cf1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed805c3a2ab25bbd5df031177bd77adcc0692ba2b2e180a8944fac9b01f4cf1a", kill_on_drop: false }`
[INFO] [stdout] ed805c3a2ab25bbd5df031177bd77adcc0692ba2b2e180a8944fac9b01f4cf1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80e9a12dd022e846ac61e2507bb527a3c501cd2067ad06064cf46c4e3709cd8f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "80e9a12dd022e846ac61e2507bb527a3c501cd2067ad06064cf46c4e3709cd8f", 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 v0.2.83
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling eyre v0.6.5
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking owo-colors v1.2.1
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking indenter v0.3.2
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling standback v0.2.14
[INFO] [stderr]    Compiling time v0.2.25
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling cookie v0.14.3
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking http v0.2.3
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking thread_local v1.1.2
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]     Checking path-dedot v3.0.7
[INFO] [stderr]     Checking smallstr v0.2.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking encoding_rs v0.8.26
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]     Checking path-absolutize v3.0.6
[INFO] [stderr]     Checking bitvec v0.19.4
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking tracing-subscriber v0.2.15
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking async-compression v0.3.7
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking tokio v0.2.24
[INFO] [stderr]     Checking publicsuffix v1.5.4
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking toml_edit v0.2.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.4
[INFO] [stderr]    Compiling parse-display-derive v0.4.1
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking pin-project v1.0.4
[INFO] [stderr]     Checking color-spantrace v0.1.6
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking color-eyre v0.5.10
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]     Checking hyper v0.13.9
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking parse-display v0.4.1
[INFO] [stderr]     Checking cookie_store v0.12.0
[INFO] [stderr]     Checking tinytemplate v1.2.0
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.10
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 42s
[INFO] running `Command { std: "docker" "inspect" "80e9a12dd022e846ac61e2507bb527a3c501cd2067ad06064cf46c4e3709cd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80e9a12dd022e846ac61e2507bb527a3c501cd2067ad06064cf46c4e3709cd8f", kill_on_drop: false }`
[INFO] [stdout] 80e9a12dd022e846ac61e2507bb527a3c501cd2067ad06064cf46c4e3709cd8f