[INFO] updating cached repository tofagerl/sortthing
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tofagerl/sortthing
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tofagerl/sortthing" "work/ex/beta-1.38-1/sources/1.37.0/gh/tofagerl/sortthing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/tofagerl/sortthing'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tofagerl/sortthing" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tofagerl/sortthing"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tofagerl/sortthing'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cd9f575d122109a5cc410e8e3a4c7f5fceefafe7
[INFO] sha for GitHub repo tofagerl/sortthing: cd9f575d122109a5cc410e8e3a4c7f5fceefafe7
[INFO] validating manifest of tofagerl/sortthing 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 tofagerl/sortthing 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 tofagerl/sortthing
[INFO] finished frobbing tofagerl/sortthing
[INFO] frobbed toml for tofagerl/sortthing written to work/ex/beta-1.38-1/sources/1.37.0/gh/tofagerl/sortthing/Cargo.toml
[INFO] started frobbing tofagerl/sortthing
[INFO] finished frobbing tofagerl/sortthing
[INFO] frobbed toml for tofagerl/sortthing written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tofagerl/sortthing/Cargo.toml
[INFO] crate tofagerl/sortthing 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 tofagerl/sortthing 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tofagerl/sortthing:/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] 5f6b4335f381099509f4ece5dc52ab0e34b2c5b64f65a3a42e7ab64c41cbca2c
[INFO] running `"docker" "start" "-a" "5f6b4335f381099509f4ece5dc52ab0e34b2c5b64f65a3a42e7ab64c41cbca2c"`
[INFO] [stderr]    Compiling sortthing v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "5f6b4335f381099509f4ece5dc52ab0e34b2c5b64f65a3a42e7ab64c41cbca2c"`
[INFO] running `"docker" "rm" "-f" "5f6b4335f381099509f4ece5dc52ab0e34b2c5b64f65a3a42e7ab64c41cbca2c"`
[INFO] [stdout] 5f6b4335f381099509f4ece5dc52ab0e34b2c5b64f65a3a42e7ab64c41cbca2c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tofagerl/sortthing:/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] dd06ecb0017c4cdb8684b48e2b8087e4ebac89c1ecb04a8a63d84c3c20aeed2c
[INFO] running `"docker" "start" "-a" "dd06ecb0017c4cdb8684b48e2b8087e4ebac89c1ecb04a8a63d84c3c20aeed2c"`
[INFO] [stderr]    Compiling sortthing v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tomsort.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let mut file_contents = fs::read_to_string("test_strings.json").expect("No such file 'testdata.json'");
[INFO] [stderr]    |             ----^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `"docker" "inspect" "dd06ecb0017c4cdb8684b48e2b8087e4ebac89c1ecb04a8a63d84c3c20aeed2c"`
[INFO] running `"docker" "rm" "-f" "dd06ecb0017c4cdb8684b48e2b8087e4ebac89c1ecb04a8a63d84c3c20aeed2c"`
[INFO] [stdout] dd06ecb0017c4cdb8684b48e2b8087e4ebac89c1ecb04a8a63d84c3c20aeed2c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tofagerl/sortthing:/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] b6c3451e1dd8dd5d89f177ae5154c55df61ba663cfe9ae62a14d617478ed3a52
[INFO] running `"docker" "start" "-a" "b6c3451e1dd8dd5d89f177ae5154c55df61ba663cfe9ae62a14d617478ed3a52"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sortthing-a122a91e1fb7668a
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tomsort::tests::simple_sort_test ... ok
[INFO] [stdout] test tomsort::tests::word_sort_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b6c3451e1dd8dd5d89f177ae5154c55df61ba663cfe9ae62a14d617478ed3a52"`
[INFO] running `"docker" "rm" "-f" "b6c3451e1dd8dd5d89f177ae5154c55df61ba663cfe9ae62a14d617478ed3a52"`
[INFO] [stdout] b6c3451e1dd8dd5d89f177ae5154c55df61ba663cfe9ae62a14d617478ed3a52