[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] checking stfl/advent-of-code-rs against try#df1b9bf194c9183fb7c0604484171064069ce232 for pr-149195-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstfl%2Fadvent-of-code-rs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-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-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/stfl/advent-of-code-rs on toolchain df1b9bf194c9183fb7c0604484171064069ce232
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "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" "+df1b9bf194c9183fb7c0604484171064069ce232" "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-1-tc2/source/Cargo.toml: unused manifest key: workspace.package.name
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.40
[INFO] [stderr]   Downloaded unicode-ident v1.0.1
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.34
[INFO] [stderr]   Downloaded quote v1.0.20
[INFO] [stderr]   Downloaded ipnet v2.7.1
[INFO] [stderr]   Downloaded rstest v0.14.0
[INFO] [stderr]   Downloaded rstest_macros v0.14.0
[INFO] [stderr]   Downloaded io-lifetimes v1.0.6
[INFO] [stderr]   Downloaded base64 v0.21.0
[INFO] [stderr]   Downloaded serde v1.0.154
[INFO] [stderr]   Downloaded security-framework v2.8.2
[INFO] [stderr]   Downloaded reqwest v0.11.14
[INFO] [stderr]   Downloaded serde_json v1.0.94
[INFO] [stderr]   Downloaded semver v1.0.10
[INFO] [stderr]   Downloaded schannel v0.1.21
[INFO] [stderr]   Downloaded security-framework-sys v2.8.0
[INFO] [stderr]   Downloaded rustix v0.36.9
[INFO] [stderr]   Downloaded web-sys v0.3.61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 844f54b34145c0362c0a79f58538e953b8af1bc6ec5b92c328ab85d38d337871
[INFO] running `Command { std: "docker" "start" "-a" "844f54b34145c0362c0a79f58538e953b8af1bc6ec5b92c328ab85d38d337871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "844f54b34145c0362c0a79f58538e953b8af1bc6ec5b92c328ab85d38d337871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "844f54b34145c0362c0a79f58538e953b8af1bc6ec5b92c328ab85d38d337871", kill_on_drop: false }`
[INFO] [stdout] 844f54b34145c0362c0a79f58538e953b8af1bc6ec5b92c328ab85d38d337871
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5af3f3a62003783a6d074e625ae74e0fc1486add7f894d0a462f30b24d3616a6
[INFO] running `Command { std: "docker" "start" "-a" "5af3f3a62003783a6d074e625ae74e0fc1486add7f894d0a462f30b24d3616a6", 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 proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling openssl v0.10.45
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling serde v1.0.154
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling semver v1.0.10
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.11
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking encoding_rs v0.8.32
[INFO] [stderr]     Checking base64 v0.21.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking ipnet v2.7.1
[INFO] [stderr]     Checking read_input v0.1.0 (/opt/rustwide/workdir/lib/read_input)
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking c21-01 v0.1.0 (/opt/rustwide/workdir/challenge/2021/01)
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]    Compiling openssl-sys v0.9.80
[INFO] [stderr]    Compiling rstest_macros v0.14.0
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking c21-02 v0.1.0 (/opt/rustwide/workdir/challenge/2021/02)
[INFO] [stderr]     Checking 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] [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" test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "5af3f3a62003783a6d074e625ae74e0fc1486add7f894d0a462f30b24d3616a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5af3f3a62003783a6d074e625ae74e0fc1486add7f894d0a462f30b24d3616a6", kill_on_drop: false }`
[INFO] [stdout] 5af3f3a62003783a6d074e625ae74e0fc1486add7f894d0a462f30b24d3616a6
