[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 master#82310651b93a594a3fd69015e1562186a080d94c 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-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/josewandersonsantos/beecrowd-rust on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d963f0fd547a9d6008f475937e6e12bbf93ba286211e94602f00accf0ba8fea8
[INFO] running `Command { std: "docker" "start" "-a" "d963f0fd547a9d6008f475937e6e12bbf93ba286211e94602f00accf0ba8fea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d963f0fd547a9d6008f475937e6e12bbf93ba286211e94602f00accf0ba8fea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d963f0fd547a9d6008f475937e6e12bbf93ba286211e94602f00accf0ba8fea8", kill_on_drop: false }`
[INFO] [stdout] d963f0fd547a9d6008f475937e6e12bbf93ba286211e94602f00accf0ba8fea8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe8d5cd9e3c118258d9718ccff8d9059a47aeaa9c16c7440b410169ada8f3128
[INFO] running `Command { std: "docker" "start" "-a" "fe8d5cd9e3c118258d9718ccff8d9059a47aeaa9c16c7440b410169ada8f3128", kill_on_drop: false }`
[INFO] [stderr]     Checking problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]  --> src/bin/1149-sum_integer.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let (mut a, mut n, mut sum):(i32, i32, i64) = (0, 0, 0);
[INFO] [stdout]   |              ^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/1066-pair_odd_positive_negative.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut lines = stdin.lock().lines().map(|l| l.unwrap());
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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/82310651b93a594a3fd69015e1562186a080d94c/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" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fe8d5cd9e3c118258d9718ccff8d9059a47aeaa9c16c7440b410169ada8f3128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe8d5cd9e3c118258d9718ccff8d9059a47aeaa9c16c7440b410169ada8f3128", kill_on_drop: false }`
[INFO] [stdout] fe8d5cd9e3c118258d9718ccff8d9059a47aeaa9c16c7440b410169ada8f3128
