[INFO] updating cached repository banziha104/RustSample
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/banziha104/RustSample
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/banziha104/RustSample" "work/ex/beta-1.38-1/sources/1.37.0/gh/banziha104/RustSample"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/banziha104/RustSample'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/banziha104/RustSample" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/banziha104/RustSample"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/banziha104/RustSample'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9ec3f524c9f5005f8e920a66b640132751f86d23
[INFO] sha for GitHub repo banziha104/RustSample: 9ec3f524c9f5005f8e920a66b640132751f86d23
[INFO] validating manifest of banziha104/RustSample 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 banziha104/RustSample 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 banziha104/RustSample
[INFO] finished frobbing banziha104/RustSample
[INFO] frobbed toml for banziha104/RustSample written to work/ex/beta-1.38-1/sources/1.37.0/gh/banziha104/RustSample/Cargo.toml
[INFO] started frobbing banziha104/RustSample
[INFO] finished frobbing banziha104/RustSample
[INFO] frobbed toml for banziha104/RustSample written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/banziha104/RustSample/Cargo.toml
[INFO] crate banziha104/RustSample 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 banziha104/RustSample 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/banziha104/RustSample:/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] 5e82b1f6be1e031127aeabacb23cd5be95c3cd5dbac6ab339695848a4fc611f9
[INFO] running `"docker" "start" "-a" "5e82b1f6be1e031127aeabacb23cd5be95c3cd5dbac6ab339695848a4fc611f9"`
[INFO] [stderr]    Compiling RustSample v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `RustSample` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_sample`
[INFO] [stderr] 
[INFO] [stderr] warning: function `returnFormat` should have a snake case name
[INFO] [stderr]  --> src/main.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn returnFormat(i : i32) -> String{
[INFO] [stderr]   |    ^^^^^^^^^^^^ help: convert the identifier to snake case: `return_format`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "5e82b1f6be1e031127aeabacb23cd5be95c3cd5dbac6ab339695848a4fc611f9"`
[INFO] running `"docker" "rm" "-f" "5e82b1f6be1e031127aeabacb23cd5be95c3cd5dbac6ab339695848a4fc611f9"`
[INFO] [stdout] 5e82b1f6be1e031127aeabacb23cd5be95c3cd5dbac6ab339695848a4fc611f9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/banziha104/RustSample:/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] 72eed198f105e8ff7cf2551d845d6a8ee93d76ab2568470f486536bf37378019
[INFO] running `"docker" "start" "-a" "72eed198f105e8ff7cf2551d845d6a8ee93d76ab2568470f486536bf37378019"`
[INFO] [stderr]    Compiling RustSample v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `RustSample` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_sample`
[INFO] [stderr] 
[INFO] [stderr] warning: function `returnFormat` should have a snake case name
[INFO] [stderr]  --> src/main.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn returnFormat(i : i32) -> String{
[INFO] [stderr]   |    ^^^^^^^^^^^^ help: convert the identifier to snake case: `return_format`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "72eed198f105e8ff7cf2551d845d6a8ee93d76ab2568470f486536bf37378019"`
[INFO] running `"docker" "rm" "-f" "72eed198f105e8ff7cf2551d845d6a8ee93d76ab2568470f486536bf37378019"`
[INFO] [stdout] 72eed198f105e8ff7cf2551d845d6a8ee93d76ab2568470f486536bf37378019
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/banziha104/RustSample:/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] e83c43eb54adf7b3afed0d9c83a93d2913510e9fc0f167980431e63b5ffb285e
[INFO] running `"docker" "start" "-a" "e83c43eb54adf7b3afed0d9c83a93d2913510e9fc0f167980431e63b5ffb285e"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/RustSample-7c5543e6c97e29a5
[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" "e83c43eb54adf7b3afed0d9c83a93d2913510e9fc0f167980431e63b5ffb285e"`
[INFO] running `"docker" "rm" "-f" "e83c43eb54adf7b3afed0d9c83a93d2913510e9fc0f167980431e63b5ffb285e"`
[INFO] [stdout] e83c43eb54adf7b3afed0d9c83a93d2913510e9fc0f167980431e63b5ffb285e