[INFO] crate merkle 1.10.0 is already in cache
[INFO] extracting crate merkle 1.10.0 into work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/merkle/1.10.0
[INFO] extracting crate merkle 1.10.0 into work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/merkle/1.10.0
[INFO] validating manifest of merkle-1.10.0 on toolchain master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of merkle-1.10.0 on toolchain try#bad365140e1e8233b42b21af70a407f14ce5fec5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing merkle-1.10.0
[INFO] finished frobbing merkle-1.10.0
[INFO] frobbed toml for merkle-1.10.0 written to work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/merkle/1.10.0/Cargo.toml
[INFO] started frobbing merkle-1.10.0
[INFO] finished frobbing merkle-1.10.0
[INFO] frobbed toml for merkle-1.10.0 written to work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/reg/merkle/1.10.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking merkle-1.10.0 against master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980 for pr-56896
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56896/worker-7/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/reg/merkle/1.10.0:/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" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c55ccaa6357175c570ff795e6c3bdcc6da0408553e9d7cb41ac3bc033d5aad98
[INFO] running `"docker" "start" "-a" "c55ccaa6357175c570ff795e6c3bdcc6da0408553e9d7cb41ac3bc033d5aad98"`
[INFO] [stderr]    Compiling merkle v1.10.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0464]: multiple matching crates for `rand`
[INFO] [stderr]  --> benches/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | extern crate rand;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: candidates:
[INFO] [stderr]           crate `rand`: /opt/crater/rustup-home/toolchains/adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-c8eb6b3592481753.rlib
[INFO] [stderr]           crate `rand`: /opt/crater/rustup-home/toolchains/adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-7b57d6f345f973b2.rlib
[INFO] [stderr]           crate `rand`: /opt/crater/rustup-home/toolchains/adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-fd8db33f14d072e0.rlib
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `rand`
[INFO] [stderr]  --> benches/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | extern crate rand;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors occurred: E0463, E0464.
[INFO] [stderr] For more information about an error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `merkle`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c55ccaa6357175c570ff795e6c3bdcc6da0408553e9d7cb41ac3bc033d5aad98"`
[INFO] running `"docker" "rm" "-f" "c55ccaa6357175c570ff795e6c3bdcc6da0408553e9d7cb41ac3bc033d5aad98"`
[INFO] [stdout] c55ccaa6357175c570ff795e6c3bdcc6da0408553e9d7cb41ac3bc033d5aad98