[INFO] updating cached repository rjoydip/learn-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rjoydip/learn-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rjoydip/learn-rust" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/rjoydip/learn-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/rjoydip/learn-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rjoydip/learn-rust" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/rjoydip/learn-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/rjoydip/learn-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0e91f308ef5e3ecc09594c3d9db61be3dfe1b6f5
[INFO] sha for GitHub repo rjoydip/learn-rust: 0e91f308ef5e3ecc09594c3d9db61be3dfe1b6f5
[INFO] validating manifest of rjoydip/learn-rust on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rjoydip/learn-rust on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rjoydip/learn-rust
[INFO] finished frobbing rjoydip/learn-rust
[INFO] frobbed toml for rjoydip/learn-rust written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/rjoydip/learn-rust/Cargo.toml
[INFO] started frobbing rjoydip/learn-rust
[INFO] finished frobbing rjoydip/learn-rust
[INFO] frobbed toml for rjoydip/learn-rust written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/rjoydip/learn-rust/Cargo.toml
[INFO] crate rjoydip/learn-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rjoydip/learn-rust against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-6/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/rjoydip/learn-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 807379b74dfb7314cf5953c86c017f04a841667cae98e7fb599ffb73c722e1b0
[INFO] running `"docker" "start" "-a" "807379b74dfb7314cf5953c86c017f04a841667cae98e7fb599ffb73c722e1b0"`
[INFO] [stderr]     Checking learn_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0428]: the name `main` is defined multiple times
[INFO] [stderr]   --> examples/struct.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn main() {
[INFO] [stderr]    | --------- previous definition of the value `main` here
[INFO] [stderr] ...
[INFO] [stderr] 32 | fn main() {
[INFO] [stderr]    | ^^^^^^^^^ `main` redefined here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `main` must be defined only once in the value namespace of this module
[INFO] [stderr] 
[INFO] [stderr] error[E0136]: multiple 'main' functions
[INFO] [stderr]   --> examples/struct.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | / fn main() {
[INFO] [stderr] 33 | |     let a = A(1);
[INFO] [stderr] 34 | |     let b = B(1.1);
[INFO] [stderr] 35 | |     let c = a.clone();
[INFO] [stderr] 36 | |
[INFO] [stderr] 37 | |     println!("{:?}, {:?}, {:?}", a, b, c);
[INFO] [stderr] 38 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] error[E0428]: the name `main` is defined multiple times
[INFO] [stderr]   --> examples/owenership_borrowing.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | fn main() {
[INFO] [stderr]    | --------- previous definition of the value `main` here
[INFO] [stderr] ...
[INFO] [stderr] 21 | fn main() {
[INFO] [stderr]    | ^^^^^^^^^ `main` redefined here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `main` must be defined only once in the value namespace of this module
[INFO] [stderr] 
[INFO] [stderr] error[E0428]: the name `main` is defined multiple times
[INFO] [stderr]   --> examples/owenership_borrowing.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | fn main() {
[INFO] [stderr]    | --------- previous definition of the value `main` here
[INFO] [stderr] ...
[INFO] [stderr] 55 | fn main() {
[INFO] [stderr]    | ^^^^^^^^^ `main` redefined here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `main` must be defined only once in the value namespace of this module
[INFO] [stderr] 
[INFO] [stderr] error[E0428]: the name `main` is defined multiple times
[INFO] [stderr]   --> examples/owenership_borrowing.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | fn main() {
[INFO] [stderr]    | --------- previous definition of the value `main` here
[INFO] [stderr] ...
[INFO] [stderr] 74 | fn main() {
[INFO] [stderr]    | ^^^^^^^^^ `main` redefined here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `main` must be defined only once in the value namespace of this module
[INFO] [stderr] 
[INFO] [stderr] error[E0136]: multiple 'main' functions
[INFO] [stderr]   --> examples/owenership_borrowing.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | / fn main() {
[INFO] [stderr] 22 | |     let mut _v = Vec::new();
[INFO] [stderr] 23 | |     for i in 1..10 {
[INFO] [stderr] 24 | |         _v.push(i);
[INFO] [stderr] ...  |
[INFO] [stderr] 27 | |     println!("Finihed");
[INFO] [stderr] 28 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] error[E0136]: multiple 'main' functions
[INFO] [stderr]   --> examples/owenership_borrowing.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | / fn main() {
[INFO] [stderr] 56 | |     let v = vec![1, 2, 3, 4, 5];
[INFO] [stderr] 57 | |
[INFO] [stderr] 58 | |     borrow1(&v);
[INFO] [stderr] ...  |
[INFO] [stderr] 62 | |     println!("Value of v (inside main fn): {:?}", v);
[INFO] [stderr] 63 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] error[E0136]: multiple 'main' functions
[INFO] [stderr]   --> examples/owenership_borrowing.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | / fn main() {
[INFO] [stderr] 75 | |     let a = 1;
[INFO] [stderr] 76 | |     let b = 2;
[INFO] [stderr] 77 | |     let v = vec![1, 2, 1, 2, 1, 3, 4, 5, 3];
[INFO] [stderr] ...  |
[INFO] [stderr] 86 | |     println!("Value of a and b is (inside main fn): {}, {}", a, b);
[INFO] [stderr] 87 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0136, E0428.
[INFO] [stderr] For more information about an error, try `rustc --explain E0136`.
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0136, E0428.
[INFO] [stderr] For more information about an error, try `rustc --explain E0136`.
[INFO] [stderr] error: Could not compile `learn_rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `learn_rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]  --> examples/var.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut x = 5;
[INFO] [stderr]   |             ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "807379b74dfb7314cf5953c86c017f04a841667cae98e7fb599ffb73c722e1b0"`
[INFO] running `"docker" "rm" "-f" "807379b74dfb7314cf5953c86c017f04a841667cae98e7fb599ffb73c722e1b0"`
[INFO] [stdout] 807379b74dfb7314cf5953c86c017f04a841667cae98e7fb599ffb73c722e1b0