[INFO] cloning repository https://github.com/stfl/advent-of-code-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stfl/advent-of-code-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstfl%2Fadvent-of-code-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstfl%2Fadvent-of-code-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 156055582252b6aecb892944c2d595f51966493e
[INFO] testing stfl/advent-of-code-rs against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstfl%2Fadvent-of-code-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/stfl/advent-of-code-rs
[INFO] finished tweaking git repo https://github.com/stfl/advent-of-code-rs
[INFO] tweaked toml for git repo https://github.com/stfl/advent-of-code-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/stfl/advent-of-code-rs on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/stfl/advent-of-code-rs 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" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /workspace/builds/worker-4-tc2/source/Cargo.toml: unused manifest key: workspace.package.name
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] effc17aa9b7ff2f526e5174d9b9439955d1c455ac5ac2f0b6fe596c252b92eff
[INFO] running `Command { std: "docker" "start" "-a" "effc17aa9b7ff2f526e5174d9b9439955d1c455ac5ac2f0b6fe596c252b92eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "effc17aa9b7ff2f526e5174d9b9439955d1c455ac5ac2f0b6fe596c252b92eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "effc17aa9b7ff2f526e5174d9b9439955d1c455ac5ac2f0b6fe596c252b92eff", kill_on_drop: false }`
[INFO] [stdout] effc17aa9b7ff2f526e5174d9b9439955d1c455ac5ac2f0b6fe596c252b92eff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c923ce2f7e67ed00f51c28176db5ae15a5d76c2f56bd6bf2027e8a0a9dbdb84
[INFO] running `Command { std: "docker" "start" "-a" "7c923ce2f7e67ed00f51c28176db5ae15a5d76c2f56bd6bf2027e8a0a9dbdb84", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: workspace.package.name
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling openssl v0.10.45
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling http v0.2.9
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling openssl-sys v0.9.80
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling try-lock v0.2.4
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling socket2 v0.4.9
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling mio v0.8.6
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling serde v1.0.154
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling http-body v0.4.5
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling tower-service v0.3.2
[INFO] [stderr]    Compiling unicode-bidi v0.3.11
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling encoding_rs v0.8.32
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling base64 v0.21.0
[INFO] [stderr]    Compiling idna v0.3.0
[INFO] [stderr]    Compiling ipnet v2.7.1
[INFO] [stderr]    Compiling url v2.3.1
[INFO] [stderr]    Compiling read_input v0.1.0 (/opt/rustwide/workdir/lib/read_input)
[INFO] [stderr]    Compiling c21-01 v0.1.0 (/opt/rustwide/workdir/challenge/2021/01)
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling tokio-util v0.7.7
[INFO] [stderr]    Compiling c21-02 v0.1.0 (/opt/rustwide/workdir/challenge/2021/02)
[INFO] [stderr]    Compiling c21-03 v0.1.0 (/opt/rustwide/workdir/challenge/2021/03)
[INFO] [stdout] error[E0515]: cannot return value referencing temporary value
[INFO] [stdout]   --> challenge/2021/03/src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             l.to_string().chars()
[INFO] [stdout]    |             -------------^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             returns a value referencing data owned by the current function
[INFO] [stdout]    |             temporary value created here
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `.collect()` to allocate the iterator
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]   --> challenge/2021/03/src/main.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let lines = parse_lines(lines);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `c21-03` (bin "c21-03") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7c923ce2f7e67ed00f51c28176db5ae15a5d76c2f56bd6bf2027e8a0a9dbdb84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c923ce2f7e67ed00f51c28176db5ae15a5d76c2f56bd6bf2027e8a0a9dbdb84", kill_on_drop: false }`
[INFO] [stdout] 7c923ce2f7e67ed00f51c28176db5ae15a5d76c2f56bd6bf2027e8a0a9dbdb84
