Dec 13 09:52:17.935 INFO testing msathis/adventofcode against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 09:52:17.935 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 13 09:52:18.242 INFO [stdout] 780b571381e5e89f24b9f655e5da78638823e4a4c079aaab6fd4c613f1306ee8
Dec 13 09:52:18.244 INFO running `"docker" "start" "-a" "780b571381e5e89f24b9f655e5da78638823e4a4c079aaab6fd4c613f1306ee8"`
Dec 13 09:52:19.003 INFO [stderr] usermod: no changes
Dec 13 09:52:19.073 INFO [stderr]    Compiling adventofcode v0.1.0 (/source)
Dec 13 09:52:19.599 INFO [stderr] warning: unused import: `Stdin`
Dec 13 09:52:19.599 INFO [stderr]  --> src/day1.rs:1:15
Dec 13 09:52:19.599 INFO [stderr]   |
Dec 13 09:52:19.599 INFO [stderr] 1 | use std::io::{Stdin, Read, stdin};
Dec 13 09:52:19.599 INFO [stderr]   |               ^^^^^
Dec 13 09:52:19.599 INFO [stderr]   |
Dec 13 09:52:19.599 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 09:52:19.599 INFO [stderr] 
Dec 13 09:52:19.599 INFO [stderr] warning: unused import: `Stdin`
Dec 13 09:52:19.599 INFO [stderr]  --> src/day2.rs:1:15
Dec 13 09:52:19.599 INFO [stderr]   |
Dec 13 09:52:19.599 INFO [stderr] 1 | use std::io::{Stdin, Read, stdin};
Dec 13 09:52:19.599 INFO [stderr]   |               ^^^^^
Dec 13 09:52:19.599 INFO [stderr] 
Dec 13 09:52:19.599 INFO [stderr] warning: unused import: `Stdin`
Dec 13 09:52:19.599 INFO [stderr]  --> src/day3.rs:1:15
Dec 13 09:52:19.599 INFO [stderr]   |
Dec 13 09:52:19.599 INFO [stderr] 1 | use std::io::{Stdin, Read, stdin};
Dec 13 09:52:19.599 INFO [stderr]   |               ^^^^^
Dec 13 09:52:19.599 INFO [stderr] 
Dec 13 09:52:19.599 INFO [stderr] warning: unused import: `core::str::Chars`
Dec 13 09:52:19.599 INFO [stderr]  --> src/day3.rs:3:5
Dec 13 09:52:19.599 INFO [stderr]   |
Dec 13 09:52:19.599 INFO [stderr] 3 | use core::str::Chars;
Dec 13 09:52:19.599 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 13 09:52:19.599 INFO [stderr] 
Dec 13 09:52:19.706 INFO [stderr] warning: unused variable: `has_twos`
Dec 13 09:52:19.706 INFO [stderr]   --> src/day2.rs:14:17
Dec 13 09:52:19.706 INFO [stderr]    |
Dec 13 09:52:19.706 INFO [stderr] 14 |         let mut has_twos = false;
Dec 13 09:52:19.706 INFO [stderr]    |                 ^^^^^^^^ help: consider using `_has_twos` instead
Dec 13 09:52:19.706 INFO [stderr]    |
Dec 13 09:52:19.706 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 09:52:19.706 INFO [stderr] 
Dec 13 09:52:19.706 INFO [stderr] warning: unused variable: `has_threes`
Dec 13 09:52:19.706 INFO [stderr]   --> src/day2.rs:15:17
Dec 13 09:52:19.706 INFO [stderr]    |
Dec 13 09:52:19.706 INFO [stderr] 15 |         let mut has_threes = false;
Dec 13 09:52:19.706 INFO [stderr]    |                 ^^^^^^^^^^ help: consider using `_has_threes` instead
Dec 13 09:52:19.706 INFO [stderr] 
Dec 13 09:52:19.706 INFO [stderr] warning: unused variable: `claims`
Dec 13 09:52:19.706 INFO [stderr]   --> src/day3.rs:58:19
Dec 13 09:52:19.706 INFO [stderr]    |
Dec 13 09:52:19.706 INFO [stderr] 58 |     let (hashmap, claims) = get_map(&buffer, &re);
Dec 13 09:52:19.706 INFO [stderr]    |                   ^^^^^^ help: consider using `_claims` instead
Dec 13 09:52:19.706 INFO [stderr] 
Dec 13 09:52:19.706 INFO [stderr] warning: unused variable: `key`
Dec 13 09:52:19.706 INFO [stderr]   --> src/day3.rs:61:10
Dec 13 09:52:19.706 INFO [stderr]    |
Dec 13 09:52:19.706 INFO [stderr] 61 |     for (key, val) in &hashmap {
Dec 13 09:52:19.706 INFO [stderr]    |          ^^^ help: consider using `_key` instead
Dec 13 09:52:19.706 INFO [stderr] 
Dec 13 09:52:19.715 INFO [stderr] warning: variable does not need to be mutable
Dec 13 09:52:19.715 INFO [stderr]   --> src/day2.rs:14:13
Dec 13 09:52:19.715 INFO [stderr]    |
Dec 13 09:52:19.715 INFO [stderr] 14 |         let mut has_twos = false;
Dec 13 09:52:19.715 INFO [stderr]    |             ----^^^^^^^^
Dec 13 09:52:19.715 INFO [stderr]    |             |
Dec 13 09:52:19.715 INFO [stderr]    |             help: remove this `mut`
Dec 13 09:52:19.715 INFO [stderr]    |
Dec 13 09:52:19.715 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 09:52:19.715 INFO [stderr] 
Dec 13 09:52:19.715 INFO [stderr] warning: variable does not need to be mutable
Dec 13 09:52:19.715 INFO [stderr]   --> src/day2.rs:15:13
Dec 13 09:52:19.715 INFO [stderr]    |
Dec 13 09:52:19.715 INFO [stderr] 15 |         let mut has_threes = false;
Dec 13 09:52:19.715 INFO [stderr]    |             ----^^^^^^^^^^
Dec 13 09:52:19.715 INFO [stderr]    |             |
Dec 13 09:52:19.715 INFO [stderr]    |             help: remove this `mut`
Dec 13 09:52:19.715 INFO [stderr] 
Dec 13 09:52:19.729 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:19.729 INFO [stderr]  --> src/day1.rs:6:5
Dec 13 09:52:19.729 INFO [stderr]   |
Dec 13 09:52:19.729 INFO [stderr] 6 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:19.729 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:19.729 INFO [stderr]   |
Dec 13 09:52:19.729 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 13 09:52:19.729 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:19.730 INFO [stderr] 
Dec 13 09:52:19.730 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:19.730 INFO [stderr]   --> src/day1.rs:20:5
Dec 13 09:52:19.730 INFO [stderr]    |
Dec 13 09:52:19.730 INFO [stderr] 20 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:19.730 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:19.730 INFO [stderr]    |
Dec 13 09:52:19.730 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:19.730 INFO [stderr] 
Dec 13 09:52:19.730 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:19.730 INFO [stderr]  --> src/day2.rs:7:5
Dec 13 09:52:19.730 INFO [stderr]   |
Dec 13 09:52:19.730 INFO [stderr] 7 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:19.730 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:19.730 INFO [stderr]   |
Dec 13 09:52:19.730 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:19.730 INFO [stderr] 
Dec 13 09:52:19.730 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:19.730 INFO [stderr]   --> src/day2.rs:40:5
Dec 13 09:52:19.730 INFO [stderr]    |
Dec 13 09:52:19.730 INFO [stderr] 40 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:19.730 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:19.730 INFO [stderr]    |
Dec 13 09:52:19.730 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:19.730 INFO [stderr] 
Dec 13 09:52:19.731 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:19.731 INFO [stderr]   --> src/day3.rs:56:5
Dec 13 09:52:19.731 INFO [stderr]    |
Dec 13 09:52:19.731 INFO [stderr] 56 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:19.731 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:19.731 INFO [stderr]    |
Dec 13 09:52:19.731 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:19.731 INFO [stderr] 
Dec 13 09:52:19.731 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:19.731 INFO [stderr]   --> src/day3.rs:73:5
Dec 13 09:52:19.731 INFO [stderr]    |
Dec 13 09:52:19.731 INFO [stderr] 73 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:19.731 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:19.731 INFO [stderr]    |
Dec 13 09:52:19.731 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:19.731 INFO [stderr] 
Dec 13 09:52:21.659 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.63s
Dec 13 09:52:21.662 INFO [stderr] su: No module specific data is present
Dec 13 09:52:21.980 INFO running `"docker" "inspect" "780b571381e5e89f24b9f655e5da78638823e4a4c079aaab6fd4c613f1306ee8"`
Dec 13 09:52:22.072 INFO running `"docker" "rm" "-f" "780b571381e5e89f24b9f655e5da78638823e4a4c079aaab6fd4c613f1306ee8"`
Dec 13 09:52:22.230 INFO [stdout] 780b571381e5e89f24b9f655e5da78638823e4a4c079aaab6fd4c613f1306ee8
Dec 13 09:52:22.232 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 13 09:52:22.451 INFO [stdout] d8f2d5721ae41641f98f1aaa7ea447a9e08810b00d36cffc4fd582f560d8bf04
Dec 13 09:52:22.452 INFO running `"docker" "start" "-a" "d8f2d5721ae41641f98f1aaa7ea447a9e08810b00d36cffc4fd582f560d8bf04"`
Dec 13 09:52:23.030 INFO [stderr] usermod: no changes
Dec 13 09:52:23.098 INFO [stderr]    Compiling adventofcode v0.1.0 (/source)
Dec 13 09:52:23.539 INFO [stderr] warning: unused import: `Stdin`
Dec 13 09:52:23.539 INFO [stderr]  --> src/day1.rs:1:15
Dec 13 09:52:23.539 INFO [stderr]   |
Dec 13 09:52:23.539 INFO [stderr] 1 | use std::io::{Stdin, Read, stdin};
Dec 13 09:52:23.539 INFO [stderr]   |               ^^^^^
Dec 13 09:52:23.539 INFO [stderr]   |
Dec 13 09:52:23.539 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 09:52:23.539 INFO [stderr] 
Dec 13 09:52:23.539 INFO [stderr] warning: unused import: `Stdin`
Dec 13 09:52:23.539 INFO [stderr]  --> src/day2.rs:1:15
Dec 13 09:52:23.539 INFO [stderr]   |
Dec 13 09:52:23.539 INFO [stderr] 1 | use std::io::{Stdin, Read, stdin};
Dec 13 09:52:23.539 INFO [stderr]   |               ^^^^^
Dec 13 09:52:23.539 INFO [stderr] 
Dec 13 09:52:23.539 INFO [stderr] warning: unused import: `Stdin`
Dec 13 09:52:23.539 INFO [stderr]  --> src/day3.rs:1:15
Dec 13 09:52:23.539 INFO [stderr]   |
Dec 13 09:52:23.539 INFO [stderr] 1 | use std::io::{Stdin, Read, stdin};
Dec 13 09:52:23.539 INFO [stderr]   |               ^^^^^
Dec 13 09:52:23.539 INFO [stderr] 
Dec 13 09:52:23.539 INFO [stderr] warning: unused import: `core::str::Chars`
Dec 13 09:52:23.539 INFO [stderr]  --> src/day3.rs:3:5
Dec 13 09:52:23.539 INFO [stderr]   |
Dec 13 09:52:23.539 INFO [stderr] 3 | use core::str::Chars;
Dec 13 09:52:23.539 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 13 09:52:23.539 INFO [stderr] 
Dec 13 09:52:23.667 INFO [stderr] warning: unused variable: `has_twos`
Dec 13 09:52:23.667 INFO [stderr]   --> src/day2.rs:14:17
Dec 13 09:52:23.667 INFO [stderr]    |
Dec 13 09:52:23.667 INFO [stderr] 14 |         let mut has_twos = false;
Dec 13 09:52:23.667 INFO [stderr]    |                 ^^^^^^^^ help: consider using `_has_twos` instead
Dec 13 09:52:23.667 INFO [stderr]    |
Dec 13 09:52:23.667 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 13 09:52:23.667 INFO [stderr] 
Dec 13 09:52:23.667 INFO [stderr] warning: unused variable: `has_threes`
Dec 13 09:52:23.667 INFO [stderr]   --> src/day2.rs:15:17
Dec 13 09:52:23.667 INFO [stderr]    |
Dec 13 09:52:23.667 INFO [stderr] 15 |         let mut has_threes = false;
Dec 13 09:52:23.667 INFO [stderr]    |                 ^^^^^^^^^^ help: consider using `_has_threes` instead
Dec 13 09:52:23.667 INFO [stderr] 
Dec 13 09:52:23.667 INFO [stderr] warning: unused variable: `claims`
Dec 13 09:52:23.667 INFO [stderr]   --> src/day3.rs:58:19
Dec 13 09:52:23.667 INFO [stderr]    |
Dec 13 09:52:23.667 INFO [stderr] 58 |     let (hashmap, claims) = get_map(&buffer, &re);
Dec 13 09:52:23.667 INFO [stderr]    |                   ^^^^^^ help: consider using `_claims` instead
Dec 13 09:52:23.667 INFO [stderr] 
Dec 13 09:52:23.667 INFO [stderr] warning: unused variable: `key`
Dec 13 09:52:23.667 INFO [stderr]   --> src/day3.rs:61:10
Dec 13 09:52:23.667 INFO [stderr]    |
Dec 13 09:52:23.667 INFO [stderr] 61 |     for (key, val) in &hashmap {
Dec 13 09:52:23.667 INFO [stderr]    |          ^^^ help: consider using `_key` instead
Dec 13 09:52:23.667 INFO [stderr] 
Dec 13 09:52:23.678 INFO [stderr] warning: variable does not need to be mutable
Dec 13 09:52:23.678 INFO [stderr]   --> src/day2.rs:14:13
Dec 13 09:52:23.678 INFO [stderr]    |
Dec 13 09:52:23.678 INFO [stderr] 14 |         let mut has_twos = false;
Dec 13 09:52:23.678 INFO [stderr]    |             ----^^^^^^^^
Dec 13 09:52:23.678 INFO [stderr]    |             |
Dec 13 09:52:23.678 INFO [stderr]    |             help: remove this `mut`
Dec 13 09:52:23.678 INFO [stderr]    |
Dec 13 09:52:23.678 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 09:52:23.678 INFO [stderr] 
Dec 13 09:52:23.678 INFO [stderr] warning: variable does not need to be mutable
Dec 13 09:52:23.678 INFO [stderr]   --> src/day2.rs:15:13
Dec 13 09:52:23.678 INFO [stderr]    |
Dec 13 09:52:23.678 INFO [stderr] 15 |         let mut has_threes = false;
Dec 13 09:52:23.678 INFO [stderr]    |             ----^^^^^^^^^^
Dec 13 09:52:23.678 INFO [stderr]    |             |
Dec 13 09:52:23.678 INFO [stderr]    |             help: remove this `mut`
Dec 13 09:52:23.678 INFO [stderr] 
Dec 13 09:52:23.743 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:23.744 INFO [stderr]  --> src/day1.rs:6:5
Dec 13 09:52:23.744 INFO [stderr]   |
Dec 13 09:52:23.744 INFO [stderr] 6 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:23.744 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:23.744 INFO [stderr]   |
Dec 13 09:52:23.744 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 13 09:52:23.744 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:23.744 INFO [stderr] 
Dec 13 09:52:23.744 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:23.744 INFO [stderr]   --> src/day1.rs:20:5
Dec 13 09:52:23.744 INFO [stderr]    |
Dec 13 09:52:23.744 INFO [stderr] 20 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:23.744 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:23.744 INFO [stderr]    |
Dec 13 09:52:23.744 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:23.744 INFO [stderr] 
Dec 13 09:52:23.744 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:23.744 INFO [stderr]  --> src/day2.rs:7:5
Dec 13 09:52:23.744 INFO [stderr]   |
Dec 13 09:52:23.744 INFO [stderr] 7 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:23.744 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:23.744 INFO [stderr]   |
Dec 13 09:52:23.744 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:23.744 INFO [stderr] 
Dec 13 09:52:23.744 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:23.744 INFO [stderr]   --> src/day2.rs:40:5
Dec 13 09:52:23.744 INFO [stderr]    |
Dec 13 09:52:23.744 INFO [stderr] 40 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:23.744 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:23.744 INFO [stderr]    |
Dec 13 09:52:23.744 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:23.744 INFO [stderr] 
Dec 13 09:52:23.744 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:23.744 INFO [stderr]   --> src/day3.rs:56:5
Dec 13 09:52:23.744 INFO [stderr]    |
Dec 13 09:52:23.744 INFO [stderr] 56 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:23.744 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:23.744 INFO [stderr]    |
Dec 13 09:52:23.744 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:23.744 INFO [stderr] 
Dec 13 09:52:23.744 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 13 09:52:23.744 INFO [stderr]   --> src/day3.rs:73:5
Dec 13 09:52:23.744 INFO [stderr]    |
Dec 13 09:52:23.744 INFO [stderr] 73 |     stdin().read_to_string(&mut buffer);
Dec 13 09:52:23.744 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 09:52:23.744 INFO [stderr]    |
Dec 13 09:52:23.744 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 13 09:52:23.744 INFO [stderr] 
Dec 13 09:52:23.950 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
Dec 13 09:52:23.951 INFO [stderr] su: No module specific data is present
Dec 13 09:52:24.416 INFO running `"docker" "inspect" "d8f2d5721ae41641f98f1aaa7ea447a9e08810b00d36cffc4fd582f560d8bf04"`
Dec 13 09:52:24.745 INFO running `"docker" "rm" "-f" "d8f2d5721ae41641f98f1aaa7ea447a9e08810b00d36cffc4fd582f560d8bf04"`
Dec 13 09:52:25.095 INFO [stdout] d8f2d5721ae41641f98f1aaa7ea447a9e08810b00d36cffc4fd582f560d8bf04
Dec 13 09:52:25.100 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 13 09:52:25.286 INFO [stdout] bbf93655fc5924140b00c9a6662328b4f25f24702aeb2aa87026249159f6b75a
Dec 13 09:52:25.292 INFO running `"docker" "start" "-a" "bbf93655fc5924140b00c9a6662328b4f25f24702aeb2aa87026249159f6b75a"`
Dec 13 09:52:25.765 INFO [stderr] usermod: no changes
Dec 13 09:52:25.769 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 13 09:52:25.769 INFO [stderr]      Running /target/debug/deps/advent-daea014b3e6e659b
Dec 13 09:52:25.769 INFO [stderr]      Running /target/debug/deps/adventofcode-8f12f20abe3fc6e2
Dec 13 09:52:25.769 INFO [stderr]    Doc-tests advent
Dec 13 09:52:25.769 INFO [stdout] 
Dec 13 09:52:25.769 INFO [stdout] running 0 tests
Dec 13 09:52:25.769 INFO [stdout] 
Dec 13 09:52:25.769 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 09:52:25.769 INFO [stdout] 
Dec 13 09:52:25.769 INFO [stdout] 
Dec 13 09:52:25.769 INFO [stdout] running 0 tests
Dec 13 09:52:25.769 INFO [stdout] 
Dec 13 09:52:25.769 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 09:52:25.769 INFO [stdout] 
Dec 13 09:52:26.559 INFO [stdout] 
Dec 13 09:52:26.559 INFO [stdout] running 0 tests
Dec 13 09:52:26.559 INFO [stdout] 
Dec 13 09:52:26.559 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 09:52:26.559 INFO [stdout] 
Dec 13 09:52:26.565 INFO [stderr] su: No module specific data is present
Dec 13 09:52:27.041 INFO running `"docker" "inspect" "bbf93655fc5924140b00c9a6662328b4f25f24702aeb2aa87026249159f6b75a"`
Dec 13 09:52:27.269 INFO running `"docker" "rm" "-f" "bbf93655fc5924140b00c9a6662328b4f25f24702aeb2aa87026249159f6b75a"`
Dec 13 09:52:27.526 INFO [stdout] bbf93655fc5924140b00c9a6662328b4f25f24702aeb2aa87026249159f6b75a