[INFO] cloning repository https://github.com/stijnh/rust-advent-of-code-2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stijnh/rust-advent-of-code-2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstijnh%2Frust-advent-of-code-2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstijnh%2Frust-advent-of-code-2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8795c662b60ca01f5d615ea87d950260c42a800
[INFO] checking stijnh/rust-advent-of-code-2019 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstijnh%2Frust-advent-of-code-2019" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stijnh/rust-advent-of-code-2019 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/stijnh/rust-advent-of-code-2019
[INFO] finished tweaking git repo https://github.com/stijnh/rust-advent-of-code-2019
[INFO] tweaked toml for git repo https://github.com/stijnh/rust-advent-of-code-2019 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/stijnh/rust-advent-of-code-2019 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding aho-corasick v1.1.3
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[INFO] [stderr]       Adding compare v0.1.0
[INFO] [stderr]       Adding defaultmap v0.5.0 (latest: v0.6.0)
[INFO] [stderr]       Adding float-ord v0.2.0 (latest: v0.3.2)
[INFO] [stderr]       Adding getrandom v0.2.15
[INFO] [stderr]       Adding libc v0.2.158
[INFO] [stderr]       Adding matrixmultiply v0.2.4 (latest: v0.3.9)
[INFO] [stderr]       Adding memchr v2.7.4
[INFO] [stderr]       Adding ndarray v0.14.0 (latest: v0.16.1)
[INFO] [stderr]       Adding num-complex v0.3.1 (latest: v0.4.6)
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[INFO] [stderr]       Adding num-traits v0.2.19
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[INFO] [stderr]       Adding proc-macro2 v1.0.86
[INFO] [stderr]       Adding quote v1.0.37
[INFO] [stderr]       Adding rand v0.8.5
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[INFO] [stderr]       Adding syn v2.0.77
[INFO] [stderr]       Adding thiserror v1.0.63
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[INFO] [stderr]       Adding unicode-ident v1.0.12
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding zerocopy v0.7.35
[INFO] [stderr]       Adding zerocopy-derive v0.7.35
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded binary-heap-plus v0.2.0
[INFO] [stderr]   Downloaded matrixmultiply v0.2.4
[INFO] [stderr]   Downloaded defaultmap v0.5.0
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[INFO] [stderr]   Downloaded ndarray v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6b787f28f8f5a5e96502febd06e5af5960ca3d79ef1a3f58839ce64fc4f6eb3
[INFO] running `Command { std: "docker" "start" "-a" "e6b787f28f8f5a5e96502febd06e5af5960ca3d79ef1a3f58839ce64fc4f6eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6b787f28f8f5a5e96502febd06e5af5960ca3d79ef1a3f58839ce64fc4f6eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b787f28f8f5a5e96502febd06e5af5960ca3d79ef1a3f58839ce64fc4f6eb3", kill_on_drop: false }`
[INFO] [stdout] e6b787f28f8f5a5e96502febd06e5af5960ca3d79ef1a3f58839ce64fc4f6eb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf8e7b9f51941253479ed5bc82600d4154f7804804efc8a965e5644a84712761
[INFO] running `Command { std: "docker" "start" "-a" "cf8e7b9f51941253479ed5bc82600d4154f7804804efc8a965e5644a84712761", kill_on_drop: false }`
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.14.0
[INFO] [stderr]    Compiling anyhow v1.0.25
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking compare v0.1.0
[INFO] [stderr]     Checking defaultmap v0.5.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking binary-heap-plus v0.2.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking advent2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/day17.rs:240:10
[INFO] [stdout]     |
[INFO] [stdout] 240 |         .intersperse(',');
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]    --> src/main.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   + #![feature(iter_intersperse)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/day17.rs:240:10
[INFO] [stdout]     |
[INFO] [stdout] 240 |         .intersperse(',');
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] help: add `#![feature(iter_intersperse)]` to the crate attributes to enable `std::iter::Iterator::intersperse`
[INFO] [stdout]    --> src/main.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout] 4   + #![feature(iter_intersperse)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `Command { std: "docker" "inspect" "cf8e7b9f51941253479ed5bc82600d4154f7804804efc8a965e5644a84712761", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf8e7b9f51941253479ed5bc82600d4154f7804804efc8a965e5644a84712761", kill_on_drop: false }`
[INFO] [stdout] cf8e7b9f51941253479ed5bc82600d4154f7804804efc8a965e5644a84712761