[INFO] cloning repository https://github.com/OssFate/AdventOfCode18
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OssFate/AdventOfCode18" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOssFate%2FAdventOfCode18", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOssFate%2FAdventOfCode18'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 27660b3ebeaafde19bfcd2496c4cef3ee86577c7
[INFO] testing OssFate/AdventOfCode18 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOssFate%2FAdventOfCode18" "/workspace/builds/worker-81/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-81/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/OssFate/AdventOfCode18 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OssFate/AdventOfCode18
[INFO] finished tweaking git repo https://github.com/OssFate/AdventOfCode18
[INFO] tweaked toml for git repo https://github.com/OssFate/AdventOfCode18 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate git repo https://github.com/OssFate/AdventOfCode18 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83e42df6c30c198c59c804703812be55efb2af9dc9c43fae1b78f98063c8d0f0
[INFO] running `Command { std: "docker" "start" "-a" "83e42df6c30c198c59c804703812be55efb2af9dc9c43fae1b78f98063c8d0f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83e42df6c30c198c59c804703812be55efb2af9dc9c43fae1b78f98063c8d0f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83e42df6c30c198c59c804703812be55efb2af9dc9c43fae1b78f98063c8d0f0", kill_on_drop: false }`
[INFO] [stdout] 83e42df6c30c198c59c804703812be55efb2af9dc9c43fae1b78f98063c8d0f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b32d156c29409052e3da770d1a0fb7d748f079b3e93d1cab5f91dc878e882246
[INFO] running `Command { std: "docker" "start" "-a" "b32d156c29409052e3da770d1a0fb7d748f079b3e93d1cab5f91dc878e882246", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling oss_advent_code_18 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:30:58
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn read_file(path: String) -> Result<Option<String>, Box<Error + 'static>> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/day/mod.rs:21:22
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn first_problem(file: &String) {
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/day/mod.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn second_problem(file: &String) {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "b32d156c29409052e3da770d1a0fb7d748f079b3e93d1cab5f91dc878e882246", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b32d156c29409052e3da770d1a0fb7d748f079b3e93d1cab5f91dc878e882246", kill_on_drop: false }`
[INFO] [stdout] b32d156c29409052e3da770d1a0fb7d748f079b3e93d1cab5f91dc878e882246
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c38eef86be9156f466872d7533a3e64594996aae0b43ffe251fd7233a01b02c
[INFO] running `Command { std: "docker" "start" "-a" "5c38eef86be9156f466872d7533a3e64594996aae0b43ffe251fd7233a01b02c", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:30:58
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn read_file(path: String) -> Result<Option<String>, Box<Error + 'static>> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling oss_advent_code_18 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/day/mod.rs:21:22
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn first_problem(file: &String) {
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/day/mod.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn second_problem(file: &String) {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:30:58
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn read_file(path: String) -> Result<Option<String>, Box<Error + 'static>> {
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + 'static`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/day/mod.rs:21:22
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn first_problem(file: &String) {
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/day/mod.rs:24:23
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn second_problem(file: &String) {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "5c38eef86be9156f466872d7533a3e64594996aae0b43ffe251fd7233a01b02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c38eef86be9156f466872d7533a3e64594996aae0b43ffe251fd7233a01b02c", kill_on_drop: false }`
[INFO] [stdout] 5c38eef86be9156f466872d7533a3e64594996aae0b43ffe251fd7233a01b02c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a1a16ba5f98ce3661ed0c3b0e41ea5e2f568de73dc2c72538a7a14dac7318d8c
[INFO] running `Command { std: "docker" "start" "-a" "a1a16ba5f98ce3661ed0c3b0e41ea5e2f568de73dc2c72538a7a14dac7318d8c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:30:58
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn read_file(path: String) -> Result<Option<String>, Box<Error + 'static>> {
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/day/mod.rs:21:22
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn first_problem(file: &String) {
[INFO] [stderr]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/day/mod.rs:24:23
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn second_problem(file: &String) {
[INFO] [stderr]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: `oss_advent_code_18` (lib) generated 3 warnings
[INFO] [stderr] warning: `oss_advent_code_18` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 26.71s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/oss_advent_code_18-7ac070a4ad5f6d5a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/oss_advent_code_18-dcc6ccbade704c46)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests oss_advent_code_18
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a1a16ba5f98ce3661ed0c3b0e41ea5e2f568de73dc2c72538a7a14dac7318d8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1a16ba5f98ce3661ed0c3b0e41ea5e2f568de73dc2c72538a7a14dac7318d8c", kill_on_drop: false }`
[INFO] [stdout] a1a16ba5f98ce3661ed0c3b0e41ea5e2f568de73dc2c72538a7a14dac7318d8c