[INFO] cloning repository https://github.com/josewandersonsantos/beecrowd-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/josewandersonsantos/beecrowd-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjosewandersonsantos%2Fbeecrowd-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjosewandersonsantos%2Fbeecrowd-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95cb6c925940ced95d82c442b34b78aee57a554c
[INFO] checking josewandersonsantos/beecrowd-rust against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjosewandersonsantos%2Fbeecrowd-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
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[INFO] started tweaking git repo https://github.com/josewandersonsantos/beecrowd-rust
[INFO] finished tweaking git repo https://github.com/josewandersonsantos/beecrowd-rust
[INFO] tweaked toml for git repo https://github.com/josewandersonsantos/beecrowd-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/josewandersonsantos/beecrowd-rust on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/josewandersonsantos/beecrowd-rust 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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10c503ea2b86e8aaab0cd18a7b7308968e09c57e28c095f2f8cd7fb51b567033
[INFO] running `Command { std: "docker" "start" "-a" "10c503ea2b86e8aaab0cd18a7b7308968e09c57e28c095f2f8cd7fb51b567033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10c503ea2b86e8aaab0cd18a7b7308968e09c57e28c095f2f8cd7fb51b567033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10c503ea2b86e8aaab0cd18a7b7308968e09c57e28c095f2f8cd7fb51b567033", kill_on_drop: false }`
[INFO] [stdout] 10c503ea2b86e8aaab0cd18a7b7308968e09c57e28c095f2f8cd7fb51b567033
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfb81b13bbe99c4f84c1b2cf1aa31544406405adf1caa94a6c6d271115150319
[INFO] running `Command { std: "docker" "start" "-a" "cfb81b13bbe99c4f84c1b2cf1aa31544406405adf1caa94a6c6d271115150319", kill_on_drop: false }`
[INFO] [stderr]     Checking problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: argument never used
[INFO] [stdout]  --> src/bin/2752-out6.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 |     println!("<%s>", out.iter().collect::<String>());
[INFO] [stdout]   |                --    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ argument never used
[INFO] [stdout]   |                |
[INFO] [stdout]   |                help: format specifiers use curly braces: `{}`
[INFO] [stdout]   |
[INFO] [stdout]   = note: printf formatting is not supported; see the documentation for `std::fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: an array of type `[char; 50]` cannot be built directly from an iterator
[INFO] [stdout]  --> src/bin/2752-out6.rs:4:48
[INFO] [stdout]   |
[INFO] [stdout] 4 |     out = "AMO FAZER EXERCICIO NO URI".chars().collect();
[INFO] [stdout]   |                                                ^^^^^^^ try collecting into a `Vec<char>`, then using `.try_into()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `FromIterator<char>` is not implemented for `[char; 50]`
[INFO] [stdout] note: the method call chain might not have had the expected associated types
[INFO] [stdout]  --> src/bin/2752-out6.rs:4:40
[INFO] [stdout]   |
[INFO] [stdout] 4 |     out = "AMO FAZER EXERCICIO NO URI".chars().collect();
[INFO] [stdout]   |           ---------------------------- ^^^^^^^ `Iterator::Item` is `char` here
[INFO] [stdout]   |           |
[INFO] [stdout]   |           this expression has type `&str`
[INFO] [stdout] note: required by a bound in `collect`
[INFO] [stdout]  --> /rustc/a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399/library/core/src/iter/traits/iterator.rs:2014:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `problems` (bin "2752-out6") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "cfb81b13bbe99c4f84c1b2cf1aa31544406405adf1caa94a6c6d271115150319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfb81b13bbe99c4f84c1b2cf1aa31544406405adf1caa94a6c6d271115150319", kill_on_drop: false }`
[INFO] [stdout] cfb81b13bbe99c4f84c1b2cf1aa31544406405adf1caa94a6c6d271115150319
