[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-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/rjoydip/learn-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/rjoydip/learn-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rjoydip/learn-rust" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/rjoydip/learn-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/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#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rjoydip/learn-rust on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-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-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/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-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/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" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rjoydip/learn-rust against master#435236b8877cdb98c82eaebfb7887782277265c5 for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-1/master#435236b8877cdb98c82eaebfb7887782277265c5:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/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" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a799303a277b3031194e35a482953c01efaac9423ce04b77e126e7d2a7efc946
[INFO] running `"docker" "start" "-a" "a799303a277b3031194e35a482953c01efaac9423ce04b77e126e7d2a7efc946"`
[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: 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: build failed
[INFO] running `"docker" "inspect" "a799303a277b3031194e35a482953c01efaac9423ce04b77e126e7d2a7efc946"`
[INFO] running `"docker" "rm" "-f" "a799303a277b3031194e35a482953c01efaac9423ce04b77e126e7d2a7efc946"`
[INFO] [stdout] a799303a277b3031194e35a482953c01efaac9423ce04b77e126e7d2a7efc946