[INFO] updating cached repository richardanaya/pong
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/richardanaya/pong
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/richardanaya/pong" "work/ex/beta-1.38-1/sources/1.37.0/gh/richardanaya/pong"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/richardanaya/pong'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/richardanaya/pong" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/richardanaya/pong"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/richardanaya/pong'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 092b3d1b186d727236e7443bbc201d50503ba369
[INFO] sha for GitHub repo richardanaya/pong: 092b3d1b186d727236e7443bbc201d50503ba369
[INFO] validating manifest of richardanaya/pong on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of richardanaya/pong on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing richardanaya/pong
[INFO] finished frobbing richardanaya/pong
[INFO] frobbed toml for richardanaya/pong written to work/ex/beta-1.38-1/sources/1.37.0/gh/richardanaya/pong/Cargo.toml
[INFO] started frobbing richardanaya/pong
[INFO] finished frobbing richardanaya/pong
[INFO] frobbed toml for richardanaya/pong written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/richardanaya/pong/Cargo.toml
[INFO] crate richardanaya/pong already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing richardanaya/pong against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/richardanaya/pong:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 16200afc307889d97aa2e6361c7ba9753361dd76e4e995446b34306308e4edc1
[INFO] running `"docker" "start" "-a" "16200afc307889d97aa2e6361c7ba9753361dd76e4e995446b34306308e4edc1"`
[INFO] [stderr]    Compiling web-dom v0.1.3
[INFO] [stderr]    Compiling ref_thread_local v0.0.0
[INFO] [stderr]    Compiling pong v0.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.06s
[INFO] running `"docker" "inspect" "16200afc307889d97aa2e6361c7ba9753361dd76e4e995446b34306308e4edc1"`
[INFO] running `"docker" "rm" "-f" "16200afc307889d97aa2e6361c7ba9753361dd76e4e995446b34306308e4edc1"`
[INFO] [stdout] 16200afc307889d97aa2e6361c7ba9753361dd76e4e995446b34306308e4edc1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/richardanaya/pong:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d96a5161e5f2880a891d8a0ded8a1448f52d54b539c848fe3d3fd7b71a3ba347
[INFO] running `"docker" "start" "-a" "d96a5161e5f2880a891d8a0ded8a1448f52d54b539c848fe3d3fd7b71a3ba347"`
[INFO] [stderr]    Compiling pong v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] error: entry symbol `main` defined multiple times
[INFO] [stderr]   |
[INFO] [stderr]   = help: did you use #[no_mangle] on `fn main`? Use #[start] instead
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `pong`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d96a5161e5f2880a891d8a0ded8a1448f52d54b539c848fe3d3fd7b71a3ba347"`
[INFO] running `"docker" "rm" "-f" "d96a5161e5f2880a891d8a0ded8a1448f52d54b539c848fe3d3fd7b71a3ba347"`
[INFO] [stdout] d96a5161e5f2880a891d8a0ded8a1448f52d54b539c848fe3d3fd7b71a3ba347