[INFO] cloning repository https://github.com/cwmoo740/aoc_2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cwmoo740/aoc_2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcwmoo740%2Faoc_2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcwmoo740%2Faoc_2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 732a42f6b037d5adc2408066c2319470bf744aba
[INFO] checking cwmoo740/aoc_2019 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcwmoo740%2Faoc_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] started tweaking git repo https://github.com/cwmoo740/aoc_2019
[INFO] finished tweaking git repo https://github.com/cwmoo740/aoc_2019
[INFO] tweaked toml for git repo https://github.com/cwmoo740/aoc_2019 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cwmoo740/aoc_2019 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cwmoo740/aoc_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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indexmap v1.3.0
[INFO] [stderr]   Downloaded num-bigint v0.2.3
[INFO] [stderr]   Downloaded pathfinding v2.0.3
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56e2902447a7a3aa84cccfd2ec39034861ef0a51e1dd89898ce5d86a7308446e
[INFO] running `Command { std: "docker" "start" "-a" "56e2902447a7a3aa84cccfd2ec39034861ef0a51e1dd89898ce5d86a7308446e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56e2902447a7a3aa84cccfd2ec39034861ef0a51e1dd89898ce5d86a7308446e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56e2902447a7a3aa84cccfd2ec39034861ef0a51e1dd89898ce5d86a7308446e", kill_on_drop: false }`
[INFO] [stdout] 56e2902447a7a3aa84cccfd2ec39034861ef0a51e1dd89898ce5d86a7308446e
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b310eb293ca90430a5aa1b94b006fbea437caf10e52eb020c2e1549455761545
[INFO] running `Command { std: "docker" "start" "-a" "b310eb293ca90430a5aa1b94b006fbea437caf10e52eb020c2e1549455761545", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking pathfinding v2.0.3
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking aoc_2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `SingleRobotState` is never constructed
[INFO] [stdout]   --> src/many_worlds_interpretation.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct SingleRobotState(Vertex, String);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SingleRobotState` is never constructed
[INFO] [stdout]   --> src/many_worlds_interpretation.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct SingleRobotState(Vertex, String);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/secure_container.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn iterate_pairs(x: &str) -> Zip<Chars, Chars> {
[INFO] [stdout]    |                     ^^^^         ^^^^^  ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |            |
[INFO] [stdout]    |                     |            the same lifetime is hidden here
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn iterate_pairs(x: &str) -> Zip<Chars<'_>, Chars<'_>> {
[INFO] [stdout]    |                                       ++++       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/secure_container.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn iterate_pairs(x: &str) -> Zip<Chars, Chars> {
[INFO] [stdout]    |                     ^^^^         ^^^^^  ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |            |
[INFO] [stdout]    |                     |            the same lifetime is hidden here
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn iterate_pairs(x: &str) -> Zip<Chars<'_>, Chars<'_>> {
[INFO] [stdout]    |                                       ++++       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.50s
[INFO] running `Command { std: "docker" "inspect" "b310eb293ca90430a5aa1b94b006fbea437caf10e52eb020c2e1549455761545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b310eb293ca90430a5aa1b94b006fbea437caf10e52eb020c2e1549455761545", kill_on_drop: false }`
[INFO] [stdout] b310eb293ca90430a5aa1b94b006fbea437caf10e52eb020c2e1549455761545