Dec 12 11:31:14.277 INFO checking merkle-1.10.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 11:31:14.277 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 11:31:14.698 INFO [stdout] b43977642fa8406fafe3db49587b19bd45b3eb767d8876168294e92626c22a75
Dec 12 11:31:14.698 INFO running `"docker" "start" "-a" "b43977642fa8406fafe3db49587b19bd45b3eb767d8876168294e92626c22a75"`
Dec 12 11:31:15.636 INFO [stderr] usermod: no changes
Dec 12 11:31:15.743 INFO [stderr]    Compiling merkle v1.10.0 (/source)
Dec 12 11:31:19.112 INFO [stderr] error[E0464]: multiple matching crates for `rand`
Dec 12 11:31:19.112 INFO [stderr]  --> benches/lib.rs:4:1
Dec 12 11:31:19.112 INFO [stderr]   |
Dec 12 11:31:19.112 INFO [stderr] 4 | extern crate rand;
Dec 12 11:31:19.112 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 12 11:31:19.112 INFO [stderr]   |
Dec 12 11:31:19.112 INFO [stderr]   = note: candidates:
Dec 12 11:31:19.112 INFO [stderr]           crate `rand`: /rustup-home/toolchains/3a75e80557a103497cffbcab395a2f37061a77ea-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-2567d00f7004e5aa.rlib
Dec 12 11:31:19.112 INFO [stderr]           crate `rand`: /rustup-home/toolchains/3a75e80557a103497cffbcab395a2f37061a77ea-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-6fd67fe62caca740.rlib
Dec 12 11:31:19.112 INFO [stderr] 
Dec 12 11:31:19.112 INFO [stderr] error[E0463]: can't find crate for `rand`
Dec 12 11:31:19.112 INFO [stderr]  --> benches/lib.rs:4:1
Dec 12 11:31:19.112 INFO [stderr]   |
Dec 12 11:31:19.112 INFO [stderr] 4 | extern crate rand;
Dec 12 11:31:19.112 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^ can't find crate
Dec 12 11:31:19.112 INFO [stderr] 
Dec 12 11:31:19.112 INFO [stderr] error: aborting due to 2 previous errors
Dec 12 11:31:19.112 INFO [stderr] 
Dec 12 11:31:19.112 INFO [stderr] Some errors occurred: E0463, E0464.
Dec 12 11:31:19.112 INFO [stderr] For more information about an error, try `rustc --explain E0463`.
Dec 12 11:31:19.114 INFO [stderr] error: Could not compile `merkle`.
Dec 12 11:31:19.114 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 12 11:31:19.304 INFO [stderr] error: build failed
Dec 12 11:31:19.310 INFO [stderr] su: No module specific data is present
Dec 12 11:31:19.903 INFO running `"docker" "inspect" "b43977642fa8406fafe3db49587b19bd45b3eb767d8876168294e92626c22a75"`
Dec 12 11:31:20.152 INFO running `"docker" "rm" "-f" "b43977642fa8406fafe3db49587b19bd45b3eb767d8876168294e92626c22a75"`
Dec 12 11:31:20.408 INFO [stdout] b43977642fa8406fafe3db49587b19bd45b3eb767d8876168294e92626c22a75