[INFO] fetching crate rand_core 0.3.1...
[INFO] extracting crate rand_core 0.3.1 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rand_core/0.3.1
[INFO] extracting crate rand_core 0.3.1 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/rand_core/0.3.1
[INFO] validating manifest of rand_core-0.3.1 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rand_core-0.3.1 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rand_core-0.3.1
[INFO] finished frobbing rand_core-0.3.1
[INFO] frobbed toml for rand_core-0.3.1 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rand_core/0.3.1/Cargo.toml
[INFO] started frobbing rand_core-0.3.1
[INFO] finished frobbing rand_core-0.3.1
[INFO] frobbed toml for rand_core-0.3.1 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/rand_core/0.3.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rand_core-0.3.1 against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-3/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rand_core/0.3.1:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] fff06db493b3707e0dcb4fba65ad6496ad34ae54c44a3db4105875c3abc3fb90
[INFO] running `"docker" "start" "-a" "fff06db493b3707e0dcb4fba65ad6496ad34ae54c44a3db4105875c3abc3fb90"`
[INFO] [stderr]    Compiling rand_core v0.3.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `"docker" "inspect" "fff06db493b3707e0dcb4fba65ad6496ad34ae54c44a3db4105875c3abc3fb90"`
[INFO] running `"docker" "rm" "-f" "fff06db493b3707e0dcb4fba65ad6496ad34ae54c44a3db4105875c3abc3fb90"`
[INFO] [stdout] fff06db493b3707e0dcb4fba65ad6496ad34ae54c44a3db4105875c3abc3fb90
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-3/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rand_core/0.3.1:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] c6c3d93beacaad03d22564d5643b8a8f43d1e8c81b01d7c8292a9a0234989526
[INFO] running `"docker" "start" "-a" "c6c3d93beacaad03d22564d5643b8a8f43d1e8c81b01d7c8292a9a0234989526"`
[INFO] [stderr]    Compiling rand_core v0.3.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "c6c3d93beacaad03d22564d5643b8a8f43d1e8c81b01d7c8292a9a0234989526"`
[INFO] running `"docker" "rm" "-f" "c6c3d93beacaad03d22564d5643b8a8f43d1e8c81b01d7c8292a9a0234989526"`
[INFO] [stdout] c6c3d93beacaad03d22564d5643b8a8f43d1e8c81b01d7c8292a9a0234989526
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-3/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/rand_core/0.3.1:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] eb5185b5201ef7156159dcc973592812563ce07da0d51827d1a2cb70e53fcce7
[INFO] running `"docker" "start" "-a" "eb5185b5201ef7156159dcc973592812563ce07da0d51827d1a2cb70e53fcce7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rand_core-ebbb54c9a88ea01e
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rand_core
[INFO] [stderr] error[E0465]: multiple rlib candidates for `rand_core` found
[INFO] [stderr]   --> /opt/crater/workdir/src/lib.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | extern crate rand_core as core4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: candidate #1: /opt/crater/target/debug/deps/librand_core-161e0a90fc629c56.rlib
[INFO] [stderr]   --> /opt/crater/workdir/src/lib.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | extern crate rand_core as core4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] note: candidate #2: /opt/crater/target/debug/deps/librand_core-7baf3e16b1ebca02.rlib
[INFO] [stderr]   --> /opt/crater/workdir/src/lib.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | extern crate rand_core as core4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `core4`
[INFO] [stderr]   --> /opt/crater/workdir/src/lib.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | extern crate rand_core as core4;
[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: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "eb5185b5201ef7156159dcc973592812563ce07da0d51827d1a2cb70e53fcce7"`
[INFO] running `"docker" "rm" "-f" "eb5185b5201ef7156159dcc973592812563ce07da0d51827d1a2cb70e53fcce7"`
[INFO] [stdout] eb5185b5201ef7156159dcc973592812563ce07da0d51827d1a2cb70e53fcce7