[INFO] cloning repository https://github.com/idebugger-learning/advent-of-code-2018-day4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/idebugger-learning/advent-of-code-2018-day4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fidebugger-learning%2Fadvent-of-code-2018-day4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fidebugger-learning%2Fadvent-of-code-2018-day4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 38a00dc4506728442d236205da1e315c7e11a8eb
[INFO] building idebugger-learning/advent-of-code-2018-day4 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fidebugger-learning%2Fadvent-of-code-2018-day4" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/idebugger-learning/advent-of-code-2018-day4 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/idebugger-learning/advent-of-code-2018-day4
[INFO] finished tweaking git repo https://github.com/idebugger-learning/advent-of-code-2018-day4
[INFO] tweaked toml for git repo https://github.com/idebugger-learning/advent-of-code-2018-day4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/idebugger-learning/advent-of-code-2018-day4 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6902cb82daf57f40eef0154e5d8da90151937a8c953ec23be4f512a7a8f7153
[INFO] running `Command { std: "docker" "start" "-a" "c6902cb82daf57f40eef0154e5d8da90151937a8c953ec23be4f512a7a8f7153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6902cb82daf57f40eef0154e5d8da90151937a8c953ec23be4f512a7a8f7153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6902cb82daf57f40eef0154e5d8da90151937a8c953ec23be4f512a7a8f7153", kill_on_drop: false }`
[INFO] [stdout] c6902cb82daf57f40eef0154e5d8da90151937a8c953ec23be4f512a7a8f7153
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d245bed82bbe0c7342b28635ec2c33fd89804b052afae93ac90a6b8a1482d4b1
[INFO] running `Command { std: "docker" "start" "-a" "d245bed82bbe0c7342b28635ec2c33fd89804b052afae93ac90a6b8a1482d4b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling either v1.7.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling nom v7.1.1
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling day4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&NaiveDate` instead of cloning the inner type
[INFO] [stdout]   --> src/main.rs:99:80
[INFO] [stdout]    |
[INFO] [stdout] 99 |     for (date, schedule) in calendar.into_iter().sorted_by_key(|(date, _)| date.clone()) {
[INFO] [stdout]    |                                                                                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.18s
[INFO] running `Command { std: "docker" "inspect" "d245bed82bbe0c7342b28635ec2c33fd89804b052afae93ac90a6b8a1482d4b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d245bed82bbe0c7342b28635ec2c33fd89804b052afae93ac90a6b8a1482d4b1", kill_on_drop: false }`
[INFO] [stdout] d245bed82bbe0c7342b28635ec2c33fd89804b052afae93ac90a6b8a1482d4b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c4971c54ff2ed6d6488155689fe42bc5c4f2e1b61961f4f81c30537f7db07f5
[INFO] running `Command { std: "docker" "start" "-a" "4c4971c54ff2ed6d6488155689fe42bc5c4f2e1b61961f4f81c30537f7db07f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling day4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&NaiveDate` instead of cloning the inner type
[INFO] [stdout]   --> src/main.rs:99:80
[INFO] [stdout]    |
[INFO] [stdout] 99 |     for (date, schedule) in calendar.into_iter().sorted_by_key(|(date, _)| date.clone()) {
[INFO] [stdout]    |                                                                                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "4c4971c54ff2ed6d6488155689fe42bc5c4f2e1b61961f4f81c30537f7db07f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c4971c54ff2ed6d6488155689fe42bc5c4f2e1b61961f4f81c30537f7db07f5", kill_on_drop: false }`
[INFO] [stdout] 4c4971c54ff2ed6d6488155689fe42bc5c4f2e1b61961f4f81c30537f7db07f5