[INFO] crate rand_core 0.2.2 is already in cache
[INFO] extracting crate rand_core 0.2.2 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/rand_core/0.2.2
[INFO] extracting crate rand_core 0.2.2 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/rand_core/0.2.2
[INFO] validating manifest of rand_core-0.2.2 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rand_core-0.2.2 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rand_core-0.2.2
[INFO] finished frobbing rand_core-0.2.2
[INFO] frobbed toml for rand_core-0.2.2 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/rand_core/0.2.2/Cargo.toml
[INFO] started frobbing rand_core-0.2.2
[INFO] finished frobbing rand_core-0.2.2
[INFO] frobbed toml for rand_core-0.2.2 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/rand_core/0.2.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rand_core-0.2.2 against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/rand_core/0.2.2:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] b72097b24e0bcb4aa57889444deec026be6851c66ab0362ccd7f8c94111899ff
[INFO] running `"docker" "start" "-a" "b72097b24e0bcb4aa57889444deec026be6851c66ab0362ccd7f8c94111899ff"`
[INFO] [stderr]    Compiling rand_core v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `"docker" "inspect" "b72097b24e0bcb4aa57889444deec026be6851c66ab0362ccd7f8c94111899ff"`
[INFO] running `"docker" "rm" "-f" "b72097b24e0bcb4aa57889444deec026be6851c66ab0362ccd7f8c94111899ff"`
[INFO] [stdout] b72097b24e0bcb4aa57889444deec026be6851c66ab0362ccd7f8c94111899ff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/rand_core/0.2.2:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 00279c2d343be83114f3eb7e09d2b69056a94f7725f76c33bdd1fcc6044e0f4a
[INFO] running `"docker" "start" "-a" "00279c2d343be83114f3eb7e09d2b69056a94f7725f76c33bdd1fcc6044e0f4a"`
[INFO] [stderr]    Compiling rand_core v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "00279c2d343be83114f3eb7e09d2b69056a94f7725f76c33bdd1fcc6044e0f4a"`
[INFO] running `"docker" "rm" "-f" "00279c2d343be83114f3eb7e09d2b69056a94f7725f76c33bdd1fcc6044e0f4a"`
[INFO] [stdout] 00279c2d343be83114f3eb7e09d2b69056a94f7725f76c33bdd1fcc6044e0f4a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/rand_core/0.2.2:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] c3007c9ca5bd1468478a2b67b950657597e492b4da71e153c24a73028c3a7e68
[INFO] running `"docker" "start" "-a" "c3007c9ca5bd1468478a2b67b950657597e492b4da71e153c24a73028c3a7e68"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rand_core-6e6b247420246b64
[INFO] [stderr]    Doc-tests rand_core
[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] error[E0465]: multiple rlib candidates for `rand_core` found
[INFO] [stderr]   --> /opt/crater/workdir/src/lib.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | extern crate rand_core as core3;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: candidate #1: /opt/crater/target/debug/deps/librand_core-3ef56f0fef9491dc.rlib
[INFO] [stderr]   --> /opt/crater/workdir/src/lib.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | extern crate rand_core as core3;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] note: candidate #2: /opt/crater/target/debug/deps/librand_core-7a40f1ad9bfeb37c.rlib
[INFO] [stderr]   --> /opt/crater/workdir/src/lib.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | extern crate rand_core as core3;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `core3`
[INFO] [stderr]   --> /opt/crater/workdir/src/lib.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | extern crate rand_core as core3;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "c3007c9ca5bd1468478a2b67b950657597e492b4da71e153c24a73028c3a7e68"`
[INFO] running `"docker" "rm" "-f" "c3007c9ca5bd1468478a2b67b950657597e492b4da71e153c24a73028c3a7e68"`
[INFO] [stdout] c3007c9ca5bd1468478a2b67b950657597e492b4da71e153c24a73028c3a7e68