[INFO] updating cached repository Uinelj/tred-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Uinelj/tred-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Uinelj/tred-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/Uinelj/tred-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Uinelj/tred-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Uinelj/tred-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Uinelj/tred-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Uinelj/tred-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ab130896eac9c6ad0225d09c2beab38ba9edc80f
[INFO] sha for GitHub repo Uinelj/tred-rs: ab130896eac9c6ad0225d09c2beab38ba9edc80f
[INFO] validating manifest of Uinelj/tred-rs 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 Uinelj/tred-rs 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 Uinelj/tred-rs
[INFO] finished frobbing Uinelj/tred-rs
[INFO] frobbed toml for Uinelj/tred-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/Uinelj/tred-rs/Cargo.toml
[INFO] started frobbing Uinelj/tred-rs
[INFO] finished frobbing Uinelj/tred-rs
[INFO] frobbed toml for Uinelj/tred-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Uinelj/tred-rs/Cargo.toml
[INFO] crate Uinelj/tred-rs 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 Uinelj/tred-rs 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Uinelj/tred-rs:/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] 9371770adb427b5a15f128e9b14fe5c232ceeb3a9ebc538d8aa82e28986fc7cc
[INFO] running `"docker" "start" "-a" "9371770adb427b5a15f128e9b14fe5c232ceeb3a9ebc538d8aa82e28986fc7cc"`
[INFO] [stderr]    Compiling tred v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "9371770adb427b5a15f128e9b14fe5c232ceeb3a9ebc538d8aa82e28986fc7cc"`
[INFO] running `"docker" "rm" "-f" "9371770adb427b5a15f128e9b14fe5c232ceeb3a9ebc538d8aa82e28986fc7cc"`
[INFO] [stdout] 9371770adb427b5a15f128e9b14fe5c232ceeb3a9ebc538d8aa82e28986fc7cc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Uinelj/tred-rs:/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] 1504a648c09d79e577d242f83bbf954c6c23fb0334565a4dc4c4f99668a8548f
[INFO] running `"docker" "start" "-a" "1504a648c09d79e577d242f83bbf954c6c23fb0334565a4dc4c4f99668a8548f"`
[INFO] [stderr]    Compiling tred v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "1504a648c09d79e577d242f83bbf954c6c23fb0334565a4dc4c4f99668a8548f"`
[INFO] running `"docker" "rm" "-f" "1504a648c09d79e577d242f83bbf954c6c23fb0334565a4dc4c4f99668a8548f"`
[INFO] [stdout] 1504a648c09d79e577d242f83bbf954c6c23fb0334565a4dc4c4f99668a8548f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Uinelj/tred-rs:/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] 08f15a168d3a781e3377f33473b12f03b5e2f26fe258500f4e86bc6c657c5cbe
[INFO] running `"docker" "start" "-a" "08f15a168d3a781e3377f33473b12f03b5e2f26fe258500f4e86bc6c657c5cbe"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tred-2c69e7c92389bb68
[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" "08f15a168d3a781e3377f33473b12f03b5e2f26fe258500f4e86bc6c657c5cbe"`
[INFO] running `"docker" "rm" "-f" "08f15a168d3a781e3377f33473b12f03b5e2f26fe258500f4e86bc6c657c5cbe"`
[INFO] [stdout] 08f15a168d3a781e3377f33473b12f03b5e2f26fe258500f4e86bc6c657c5cbe