[INFO] updating cached repository OriginalDecode/rust-learn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/OriginalDecode/rust-learn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/OriginalDecode/rust-learn" "work/ex/beta-1.37-6/sources/1.36.0/gh/OriginalDecode/rust-learn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/OriginalDecode/rust-learn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/OriginalDecode/rust-learn" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/OriginalDecode/rust-learn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/OriginalDecode/rust-learn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a14535e1d1621f63342368dede8a230075e0831f
[INFO] sha for GitHub repo OriginalDecode/rust-learn: a14535e1d1621f63342368dede8a230075e0831f
[INFO] validating manifest of OriginalDecode/rust-learn on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of OriginalDecode/rust-learn on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing OriginalDecode/rust-learn
[INFO] finished frobbing OriginalDecode/rust-learn
[INFO] frobbed toml for OriginalDecode/rust-learn written to work/ex/beta-1.37-6/sources/1.36.0/gh/OriginalDecode/rust-learn/Cargo.toml
[INFO] started frobbing OriginalDecode/rust-learn
[INFO] finished frobbing OriginalDecode/rust-learn
[INFO] frobbed toml for OriginalDecode/rust-learn written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/OriginalDecode/rust-learn/Cargo.toml
[INFO] crate OriginalDecode/rust-learn already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing OriginalDecode/rust-learn against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/OriginalDecode/rust-learn:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 840eed5e49ba9890361c1af542e4fa8adeb337fe7a11bde2722a8c993400e40c
[INFO] running `"docker" "start" "-a" "840eed5e49ba9890361c1af542e4fa8adeb337fe7a11bde2722a8c993400e40c"`
[INFO] [stderr]    Compiling rust-learn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0464]: multiple matching crates for `lazy_static`
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate lazy_static;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: candidates:
[INFO] [stderr]           crate `lazy_static`: /opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblazy_static-9afe38aab5ae14ec.rlib
[INFO] [stderr]           crate `lazy_static`: /opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblazy_static-d2b6be8825c510eb.rlib
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `lazy_static`
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate lazy_static;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `rust-learn`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "840eed5e49ba9890361c1af542e4fa8adeb337fe7a11bde2722a8c993400e40c"`
[INFO] running `"docker" "rm" "-f" "840eed5e49ba9890361c1af542e4fa8adeb337fe7a11bde2722a8c993400e40c"`
[INFO] [stdout] 840eed5e49ba9890361c1af542e4fa8adeb337fe7a11bde2722a8c993400e40c