[INFO] cloning repository https://github.com/strank/AdventOfCode2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/strank/AdventOfCode2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrank%2FAdventOfCode2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrank%2FAdventOfCode2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9782fa52606ec7bc009dce438c054c1cb0d7ce30
[INFO] checking strank/AdventOfCode2020 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrank%2FAdventOfCode2020" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/strank/AdventOfCode2020 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/strank/AdventOfCode2020
[INFO] finished tweaking git repo https://github.com/strank/AdventOfCode2020
[INFO] tweaked toml for git repo https://github.com/strank/AdventOfCode2020 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/strank/AdventOfCode2020 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded phf_macros v0.11.0
[INFO] [stderr]   Downloaded phf v0.11.0
[INFO] [stderr]   Downloaded phf_generator v0.11.0
[INFO] [stderr]   Downloaded phf_shared v0.11.0
[INFO] [stderr]   Downloaded pathfinding v3.0.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02c54752184a67f519c27d34212a9e4c33ddd08c0790cfeab19b7a4dee61224e
[INFO] running `Command { std: "docker" "start" "-a" "02c54752184a67f519c27d34212a9e4c33ddd08c0790cfeab19b7a4dee61224e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02c54752184a67f519c27d34212a9e4c33ddd08c0790cfeab19b7a4dee61224e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02c54752184a67f519c27d34212a9e4c33ddd08c0790cfeab19b7a4dee61224e", kill_on_drop: false }`
[INFO] [stdout] 02c54752184a67f519c27d34212a9e4c33ddd08c0790cfeab19b7a4dee61224e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03e4519cf0ade79369ce4e7048349d01ae71cb0881dba8b5b2a6621c290c3457
[INFO] running `Command { std: "docker" "start" "-a" "03e4519cf0ade79369ce4e7048349d01ae71cb0881dba8b5b2a6621c290c3457", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling phf_shared v0.11.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.73
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling advent_of_code_202x v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling phf_generator v0.11.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling phf_macros v0.11.0
[INFO] [stderr]     Checking phf v0.11.0
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking pathfinding v3.0.13
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.60s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "03e4519cf0ade79369ce4e7048349d01ae71cb0881dba8b5b2a6621c290c3457", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03e4519cf0ade79369ce4e7048349d01ae71cb0881dba8b5b2a6621c290c3457", kill_on_drop: false }`
[INFO] [stdout] 03e4519cf0ade79369ce4e7048349d01ae71cb0881dba8b5b2a6621c290c3457
[INFO] checking strank/AdventOfCode2020 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrank%2FAdventOfCode2020" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/strank/AdventOfCode2020 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/strank/AdventOfCode2020
[INFO] finished tweaking git repo https://github.com/strank/AdventOfCode2020
[INFO] tweaked toml for git repo https://github.com/strank/AdventOfCode2020 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/strank/AdventOfCode2020 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76d33acc381a23e49a50edec7afbd354a4c3ecd21d196c6aca072e50b7e9f7d3
[INFO] running `Command { std: "docker" "start" "-a" "76d33acc381a23e49a50edec7afbd354a4c3ecd21d196c6aca072e50b7e9f7d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76d33acc381a23e49a50edec7afbd354a4c3ecd21d196c6aca072e50b7e9f7d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76d33acc381a23e49a50edec7afbd354a4c3ecd21d196c6aca072e50b7e9f7d3", kill_on_drop: false }`
[INFO] [stdout] 76d33acc381a23e49a50edec7afbd354a4c3ecd21d196c6aca072e50b7e9f7d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 702b5acd5e1aa378ef2d0660b03cc4d6d3f7d8132179a41a183161d144ca8ddb
[INFO] running `Command { std: "docker" "start" "-a" "702b5acd5e1aa378ef2d0660b03cc4d6d3f7d8132179a41a183161d144ca8ddb", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling phf_shared v0.11.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling serde_json v1.0.73
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling advent_of_code_202x v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]    Compiling phf_generator v0.11.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling phf_macros v0.11.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking phf v0.11.0
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking pathfinding v3.0.13
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.86s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "702b5acd5e1aa378ef2d0660b03cc4d6d3f7d8132179a41a183161d144ca8ddb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "702b5acd5e1aa378ef2d0660b03cc4d6d3f7d8132179a41a183161d144ca8ddb", kill_on_drop: false }`
[INFO] [stdout] 702b5acd5e1aa378ef2d0660b03cc4d6d3f7d8132179a41a183161d144ca8ddb