[INFO] cloning repository https://github.com/FourCredits/aoc2019-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FourCredits/aoc2019-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFourCredits%2Faoc2019-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFourCredits%2Faoc2019-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e477801349e82e06dce1775383ed7f4ef788a5c9
[INFO] checking FourCredits/aoc2019-rust against master#00bfd6b2734d9c28a147bf237490995731781fdd for pr-117984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFourCredits%2Faoc2019-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FourCredits/aoc2019-rust on toolchain 00bfd6b2734d9c28a147bf237490995731781fdd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+00bfd6b2734d9c28a147bf237490995731781fdd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FourCredits/aoc2019-rust
[INFO] finished tweaking git repo https://github.com/FourCredits/aoc2019-rust
[INFO] tweaked toml for git repo https://github.com/FourCredits/aoc2019-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/FourCredits/aoc2019-rust 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" "+00bfd6b2734d9c28a147bf237490995731781fdd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded modexp v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+00bfd6b2734d9c28a147bf237490995731781fdd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2ac803cb15abb8ff535653d0020c1634bd0ba9b96ad4bb2f021b992d038750e
[INFO] running `Command { std: "docker" "start" "-a" "d2ac803cb15abb8ff535653d0020c1634bd0ba9b96ad4bb2f021b992d038750e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2ac803cb15abb8ff535653d0020c1634bd0ba9b96ad4bb2f021b992d038750e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2ac803cb15abb8ff535653d0020c1634bd0ba9b96ad4bb2f021b992d038750e", kill_on_drop: false }`
[INFO] [stdout] d2ac803cb15abb8ff535653d0020c1634bd0ba9b96ad4bb2f021b992d038750e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+00bfd6b2734d9c28a147bf237490995731781fdd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76e7081286e8bc05d68b8811ebf7d4c9b55efb358a02d4fb5c857e38090f1127
[INFO] running `Command { std: "docker" "start" "-a" "76e7081286e8bc05d68b8811ebf7d4c9b55efb358a02d4fb5c857e38090f1127", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking intcode v0.1.0 (/opt/rustwide/workdir/intcode)
[INFO] [stderr]     Checking utils v0.1.0 (/opt/rustwide/workdir/utils)
[INFO] [stderr]    Compiling libc v0.2.133
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking d16 v0.1.0 (/opt/rustwide/workdir/d16)
[INFO] [stderr]     Checking d01 v0.1.0 (/opt/rustwide/workdir/d01)
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking d13 v0.1.0 (/opt/rustwide/workdir/d13)
[INFO] [stderr]     Checking d02 v0.1.0 (/opt/rustwide/workdir/d02)
[INFO] [stderr]     Checking d21 v0.1.0 (/opt/rustwide/workdir/d21)
[INFO] [stderr]     Checking d05 v0.1.0 (/opt/rustwide/workdir/d05)
[INFO] [stderr]     Checking d17 v0.1.0 (/opt/rustwide/workdir/d17)
[INFO] [stderr]     Checking d11 v0.1.0 (/opt/rustwide/workdir/d11)
[INFO] [stderr]     Checking d12 v0.1.0 (/opt/rustwide/workdir/d12)
[INFO] [stderr]     Checking d10 v0.1.0 (/opt/rustwide/workdir/d10)
[INFO] [stderr]     Checking d19 v0.1.0 (/opt/rustwide/workdir/d19)
[INFO] [stderr]     Checking d18 v0.1.0 (/opt/rustwide/workdir/d18)
[INFO] [stderr]     Checking d20 v0.1.0 (/opt/rustwide/workdir/d20)
[INFO] [stderr]     Checking d03 v0.1.0 (/opt/rustwide/workdir/d03)
[INFO] [stderr]     Checking d24 v0.1.0 (/opt/rustwide/workdir/d24)
[INFO] [stderr]     Checking d07 v0.1.0 (/opt/rustwide/workdir/d07)
[INFO] [stderr]     Checking d09 v0.1.0 (/opt/rustwide/workdir/d09)
[INFO] [stderr]     Checking d23 v0.1.0 (/opt/rustwide/workdir/d23)
[INFO] [stderr]     Checking d15 v0.1.0 (/opt/rustwide/workdir/d15)
[INFO] [stderr]     Checking d25 v0.1.0 (/opt/rustwide/workdir/d25)
[INFO] [stderr]     Checking d14 v0.1.0 (/opt/rustwide/workdir/d14)
[INFO] [stderr]     Checking d06 v0.1.0 (/opt/rustwide/workdir/d06)
[INFO] [stderr]     Checking d04 v0.1.0 (/opt/rustwide/workdir/d04)
[INFO] [stderr]     Checking d08 v0.1.0 (/opt/rustwide/workdir/d08)
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking modexp v0.2.2
[INFO] [stderr]     Checking d22 v0.1.0 (/opt/rustwide/workdir/d22)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.60s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[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" "76e7081286e8bc05d68b8811ebf7d4c9b55efb358a02d4fb5c857e38090f1127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76e7081286e8bc05d68b8811ebf7d4c9b55efb358a02d4fb5c857e38090f1127", kill_on_drop: false }`
[INFO] [stdout] 76e7081286e8bc05d68b8811ebf7d4c9b55efb358a02d4fb5c857e38090f1127