[INFO] cloning repository https://github.com/rjoydip/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rjoydip/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e91f308ef5e3ecc09594c3d9db61be3dfe1b6f5
[INFO] checking rjoydip/learn-rust against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frjoydip%2Flearn-rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rjoydip/learn-rust on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rjoydip/learn-rust
[INFO] finished tweaking git repo https://github.com/rjoydip/learn-rust
[INFO] tweaked toml for git repo https://github.com/rjoydip/learn-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/rjoydip/learn-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6e04a4d875d15dd3b9fe64e2d91368d85cb7d5138d535b13adc0b5a349a5cd4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e6e04a4d875d15dd3b9fe64e2d91368d85cb7d5138d535b13adc0b5a349a5cd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6e04a4d875d15dd3b9fe64e2d91368d85cb7d5138d535b13adc0b5a349a5cd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6e04a4d875d15dd3b9fe64e2d91368d85cb7d5138d535b13adc0b5a349a5cd4", kill_on_drop: false }`
[INFO] [stdout] e6e04a4d875d15dd3b9fe64e2d91368d85cb7d5138d535b13adc0b5a349a5cd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31fffe85ebe9d9cdb152918c90c45f147cd9bfef4abc38926aeb931c07db5713
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "31fffe85ebe9d9cdb152918c90c45f147cd9bfef4abc38926aeb931c07db5713", kill_on_drop: false }`
[INFO] [stderr]     Checking learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]  --> examples/hash_map.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | /     /**
[INFO] [stdout] 5 | |      * Example 1
[INFO] [stdout] 6 | |      * Simple hash map
[INFO] [stdout] 7 | |      * Insert value in HashMap and print that
[INFO] [stdout] 8 | |      **/
[INFO] [stdout]   | |________^
[INFO] [stdout] 9 |       let mut hm = HashMap::new();
[INFO] [stdout]   |       ---------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> examples/match.rs:46:10
[INFO] [stdout]    |
[INFO] [stdout] 46 |         4...7 => println!("In between 4...7: {}", a),
[INFO] [stdout]    |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> examples/match.rs:61:15
[INFO] [stdout]    |
[INFO] [stdout] 61 |         n @ 1 ... 10 => println!("Between 1 to 10 : {}", n),
[INFO] [stdout]    |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> examples/match.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 |         n @ 11 ... 20 => println!("Between 11 to 20 : {}", n),
[INFO] [stdout]    |                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0428]: the name `main` is defined multiple times
[INFO] [stdout]   --> examples/struct.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn main() {
[INFO] [stdout]    | --------- previous definition of the value `main` here
[INFO] [stdout] ...
[INFO] [stdout] 32 | fn main() {
[INFO] [stdout]    | ^^^^^^^^^ `main` redefined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `main` must be defined only once in the value namespace of this module
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0428]: the name `main` is defined multiple times
[INFO] [stdout]   --> examples/owenership_borrowing.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() {
[INFO] [stdout]    | --------- previous definition of the value `main` here
[INFO] [stdout] ...
[INFO] [stdout] 21 | fn main() {
[INFO] [stdout]    | ^^^^^^^^^ `main` redefined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `main` must be defined only once in the value namespace of this module
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0428]: the name `main` is defined multiple times
[INFO] [stdout]   --> examples/owenership_borrowing.rs:55:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() {
[INFO] [stdout]    | --------- previous definition of the value `main` here
[INFO] [stdout] ...
[INFO] [stdout] 55 | fn main() {
[INFO] [stdout]    | ^^^^^^^^^ `main` redefined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `main` must be defined only once in the value namespace of this module
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0428]: the name `main` is defined multiple times
[INFO] [stdout]   --> examples/owenership_borrowing.rs:74:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() {
[INFO] [stdout]    | --------- previous definition of the value `main` here
[INFO] [stdout] ...
[INFO] [stdout] 74 | fn main() {
[INFO] [stdout]    | ^^^^^^^^^ `main` redefined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `main` must be defined only once in the value namespace of this module
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0136]: multiple `main` functions
[INFO] [stdout]   --> examples/struct.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | / fn main() {
[INFO] [stdout] 33 | |     let a = A(1);
[INFO] [stdout] 34 | |     let b = B(1.1);
[INFO] [stdout] 35 | |     let c = a.clone();
[INFO] [stdout] 36 | |
[INFO] [stdout] 37 | |     println!("{:?}, {:?}, {:?}", a, b, c);
[INFO] [stdout] 38 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]  --> examples/var.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut x = 5;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0136]: multiple `main` functions
[INFO] [stdout]   --> examples/owenership_borrowing.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / fn main() {
[INFO] [stdout] 22 | |     let mut _v = Vec::new();
[INFO] [stdout] 23 | |     for i in 1..10 {
[INFO] [stdout] 24 | |         _v.push(i);
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |     println!("Finihed");
[INFO] [stdout] 28 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0136]: multiple `main` functions
[INFO] [stdout]   --> examples/owenership_borrowing.rs:55:1
[INFO] [stdout]    |
[INFO] [stdout] 55 | / fn main() {
[INFO] [stdout] 56 | |     let v = vec![1, 2, 3, 4, 5];
[INFO] [stdout] 57 | |
[INFO] [stdout] 58 | |     borrow1(&v);
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |     println!("Value of v (inside main fn): {:?}", v);
[INFO] [stdout] 63 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0136]: multiple `main` functions
[INFO] [stdout]   --> examples/owenership_borrowing.rs:74:1
[INFO] [stdout]    |
[INFO] [stdout] 74 | / fn main() {
[INFO] [stdout] 75 | |     let a = 1;
[INFO] [stdout] 76 | |     let b = 2;
[INFO] [stdout] 77 | |     let v = vec![1, 2, 1, 2, 1, 3, 4, 5, 3];
[INFO] [stdout] ...  |
[INFO] [stdout] 86 | |     println!("Value of a and b is (inside main fn): {}, {}", a, b);
[INFO] [stdout] 87 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> examples/loop.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | /     /**
[INFO] [stdout] 31 | |      * Break
[INFO] [stdout] 32 | |      **/
[INFO] [stdout]    | |________^
[INFO] [stdout] 33 |       let mut x = 0;
[INFO] [stdout]    |       -------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> examples/loop.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | /     /**
[INFO] [stdout] 66 | |      * Continue
[INFO] [stdout] 67 | |      **/
[INFO] [stdout]    | |________^
[INFO] [stdout] 68 | /     for i in 1..20 {
[INFO] [stdout] 69 | |         if i == 2 {
[INFO] [stdout] 70 | |             continue;
[INFO] [stdout] 71 | |         }
[INFO] [stdout] 72 | |         println!("Value of i is: {}", i);
[INFO] [stdout] 73 | |     }
[INFO] [stdout]    | |_____- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]  --> examples/loop.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | /     loop {
[INFO] [stdout] 4 | |         println!("Forever");
[INFO] [stdout] 5 | |     }
[INFO] [stdout]   | |_____- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 8 |       let mut count = 5;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0136, E0428.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0136`.
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn_rust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0136, E0428.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0136`.
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "31fffe85ebe9d9cdb152918c90c45f147cd9bfef4abc38926aeb931c07db5713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31fffe85ebe9d9cdb152918c90c45f147cd9bfef4abc38926aeb931c07db5713", kill_on_drop: false }`
[INFO] [stdout] 31fffe85ebe9d9cdb152918c90c45f147cd9bfef4abc38926aeb931c07db5713