[INFO] updating cached repository blt/mmap_comm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/blt/mmap_comm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/blt/mmap_comm" "work/ex/beta-1.38-1/sources/1.37.0/gh/blt/mmap_comm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/blt/mmap_comm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/blt/mmap_comm" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/blt/mmap_comm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/blt/mmap_comm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d0a505789d7e9ba8da6d04b2bf3f1b7e4617e897
[INFO] sha for GitHub repo blt/mmap_comm: d0a505789d7e9ba8da6d04b2bf3f1b7e4617e897
[INFO] validating manifest of blt/mmap_comm on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of blt/mmap_comm on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing blt/mmap_comm
[INFO] finished frobbing blt/mmap_comm
[INFO] frobbed toml for blt/mmap_comm written to work/ex/beta-1.38-1/sources/1.37.0/gh/blt/mmap_comm/Cargo.toml
[INFO] started frobbing blt/mmap_comm
[INFO] finished frobbing blt/mmap_comm
[INFO] frobbed toml for blt/mmap_comm written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/blt/mmap_comm/Cargo.toml
[INFO] crate blt/mmap_comm already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing blt/mmap_comm against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/blt/mmap_comm:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 9fbfbf256cc34830ec0b2e05e1c9494471b8f4b300dee3fe9594f5f39bc48ade
[INFO] running `"docker" "start" "-a" "9fbfbf256cc34830ec0b2e05e1c9494471b8f4b300dee3fe9594f5f39bc48ade"`
[INFO] [stderr]    Compiling quantiles v0.7.0
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling parking_lot_core v0.2.10
[INFO] [stderr]    Compiling clap v2.29.1
[INFO] [stderr]    Compiling parking_lot v0.5.3
[INFO] [stderr]    Compiling mmap_comm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `time` is imported redundantly
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::{fs, mem, panic, sync, thread, time};
[INFO] [stderr]    |                                         ---- the item `time` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 28 |     use std::time;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.23s
[INFO] running `"docker" "inspect" "9fbfbf256cc34830ec0b2e05e1c9494471b8f4b300dee3fe9594f5f39bc48ade"`
[INFO] running `"docker" "rm" "-f" "9fbfbf256cc34830ec0b2e05e1c9494471b8f4b300dee3fe9594f5f39bc48ade"`
[INFO] [stdout] 9fbfbf256cc34830ec0b2e05e1c9494471b8f4b300dee3fe9594f5f39bc48ade
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/blt/mmap_comm:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 10bfa9c0b28d09dac41275cc8c6eb8562b27094e60e3ca060c144ea751918624
[INFO] running `"docker" "start" "-a" "10bfa9c0b28d09dac41275cc8c6eb8562b27094e60e3ca060c144ea751918624"`
[INFO] [stderr]    Compiling mmap_comm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `time` is imported redundantly
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::{fs, mem, panic, sync, thread, time};
[INFO] [stderr]    |                                         ---- the item `time` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 28 |     use std::time;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `"docker" "inspect" "10bfa9c0b28d09dac41275cc8c6eb8562b27094e60e3ca060c144ea751918624"`
[INFO] running `"docker" "rm" "-f" "10bfa9c0b28d09dac41275cc8c6eb8562b27094e60e3ca060c144ea751918624"`
[INFO] [stdout] 10bfa9c0b28d09dac41275cc8c6eb8562b27094e60e3ca060c144ea751918624
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/blt/mmap_comm:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 2ce6033142106baebb948fb1fe95b56029316c64c3f4bad80bfe5241289e65b3
[INFO] running `"docker" "start" "-a" "2ce6033142106baebb948fb1fe95b56029316c64c3f4bad80bfe5241289e65b3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mmap_comm-a17ed118bf43d1e4
[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] running `"docker" "inspect" "2ce6033142106baebb948fb1fe95b56029316c64c3f4bad80bfe5241289e65b3"`
[INFO] running `"docker" "rm" "-f" "2ce6033142106baebb948fb1fe95b56029316c64c3f4bad80bfe5241289e65b3"`
[INFO] [stdout] 2ce6033142106baebb948fb1fe95b56029316c64c3f4bad80bfe5241289e65b3