[INFO] cloning repository https://github.com/risboo6909/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/risboo6909/aoc2019-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frisboo6909%2Faoc2019-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frisboo6909%2Faoc2019-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d20434cadc506d024f1b4089828615501015b25f
[INFO] checking risboo6909/aoc2019-rust against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frisboo6909%2Faoc2019-rust" "/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/risboo6909/aoc2019-rust on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/risboo6909/aoc2019-rust
[INFO] finished tweaking git repo https://github.com/risboo6909/aoc2019-rust
[INFO] tweaked toml for git repo https://github.com/risboo6909/aoc2019-rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/risboo6909/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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded colored v1.9.0
[INFO] [stderr]   Downloaded image v0.23.0-preview.0
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90decf43e28ed00bee53aa8b02de974aec07818515793a3da56b3854b52bc3c8
[INFO] running `Command { std: "docker" "start" "-a" "90decf43e28ed00bee53aa8b02de974aec07818515793a3da56b3854b52bc3c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90decf43e28ed00bee53aa8b02de974aec07818515793a3da56b3854b52bc3c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90decf43e28ed00bee53aa8b02de974aec07818515793a3da56b3854b52bc3c8", kill_on_drop: false }`
[INFO] [stdout] 90decf43e28ed00bee53aa8b02de974aec07818515793a3da56b3854b52bc3c8
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49bb169278e7b3e86533aa867493a2372d9e0a35fd1bd1186e1986691c1d3aa5
[INFO] running `Command { std: "docker" "start" "-a" "49bb169278e7b3e86533aa867493a2372d9e0a35fd1bd1186e1986691c1d3aa5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking miniz_oxide v0.3.5
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking tiff v0.4.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]     Checking png v0.15.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking rayon v1.2.1
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking image v0.23.0-preview.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking utils v0.1.0 (/opt/rustwide/workdir/utils)
[INFO] [stderr]     Checking problems v0.1.0 (/opt/rustwide/workdir/problems)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> problems/src/problem3/mod.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn advance_cursor(mut cursor: &mut Cursor, dir: Dir) {
[INFO] [stdout]    |                   ----^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> problems/src/problem3/mod.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn advance_cursor(mut cursor: &mut Cursor, dir: Dir) {
[INFO] [stdout]    |                   ----^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.58s
[INFO] running `Command { std: "docker" "inspect" "49bb169278e7b3e86533aa867493a2372d9e0a35fd1bd1186e1986691c1d3aa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49bb169278e7b3e86533aa867493a2372d9e0a35fd1bd1186e1986691c1d3aa5", kill_on_drop: false }`
[INFO] [stdout] 49bb169278e7b3e86533aa867493a2372d9e0a35fd1bd1186e1986691c1d3aa5
[INFO] checking risboo6909/aoc2019-rust against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frisboo6909%2Faoc2019-rust" "/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/risboo6909/aoc2019-rust on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/risboo6909/aoc2019-rust
[INFO] finished tweaking git repo https://github.com/risboo6909/aoc2019-rust
[INFO] tweaked toml for git repo https://github.com/risboo6909/aoc2019-rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/risboo6909/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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0522148635b30abc60d04db7fc00a972cec67540b68beebdae3a2b220a802120
[INFO] running `Command { std: "docker" "start" "-a" "0522148635b30abc60d04db7fc00a972cec67540b68beebdae3a2b220a802120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0522148635b30abc60d04db7fc00a972cec67540b68beebdae3a2b220a802120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0522148635b30abc60d04db7fc00a972cec67540b68beebdae3a2b220a802120", kill_on_drop: false }`
[INFO] [stdout] 0522148635b30abc60d04db7fc00a972cec67540b68beebdae3a2b220a802120
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 605f5fd34a932824c503fe5d6b079a199a877733c3c02aabca369c08762bf8a3
[INFO] running `Command { std: "docker" "start" "-a" "605f5fd34a932824c503fe5d6b079a199a877733c3c02aabca369c08762bf8a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking miniz_oxide v0.3.5
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking colored v1.9.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking tiff v0.4.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking png v0.15.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking rayon v1.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking image v0.23.0-preview.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking utils v0.1.0 (/opt/rustwide/workdir/utils)
[INFO] [stderr]     Checking problems v0.1.0 (/opt/rustwide/workdir/problems)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> problems/src/problem3/mod.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn advance_cursor(mut cursor: &mut Cursor, dir: Dir) {
[INFO] [stdout]    |                   ----^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> problems/src/problem3/mod.rs:58:19
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn advance_cursor(mut cursor: &mut Cursor, dir: Dir) {
[INFO] [stdout]    |                   ----^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.63s
[INFO] running `Command { std: "docker" "inspect" "605f5fd34a932824c503fe5d6b079a199a877733c3c02aabca369c08762bf8a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "605f5fd34a932824c503fe5d6b079a199a877733c3c02aabca369c08762bf8a3", kill_on_drop: false }`
[INFO] [stdout] 605f5fd34a932824c503fe5d6b079a199a877733c3c02aabca369c08762bf8a3