[INFO] updating cached repository howeih/Day-6-Postfix-notation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/howeih/Day-6-Postfix-notation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-6-Postfix-notation" "work/ex/beta-1.38-1/sources/1.37.0/gh/howeih/Day-6-Postfix-notation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/howeih/Day-6-Postfix-notation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-6-Postfix-notation" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howeih/Day-6-Postfix-notation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howeih/Day-6-Postfix-notation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 31b590a37cd4f2f1b12b611fd885e0a69cc42107
[INFO] sha for GitHub repo howeih/Day-6-Postfix-notation: 31b590a37cd4f2f1b12b611fd885e0a69cc42107
[INFO] validating manifest of howeih/Day-6-Postfix-notation 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 howeih/Day-6-Postfix-notation 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 howeih/Day-6-Postfix-notation
[INFO] finished frobbing howeih/Day-6-Postfix-notation
[INFO] frobbed toml for howeih/Day-6-Postfix-notation written to work/ex/beta-1.38-1/sources/1.37.0/gh/howeih/Day-6-Postfix-notation/Cargo.toml
[INFO] started frobbing howeih/Day-6-Postfix-notation
[INFO] finished frobbing howeih/Day-6-Postfix-notation
[INFO] frobbed toml for howeih/Day-6-Postfix-notation written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howeih/Day-6-Postfix-notation/Cargo.toml
[INFO] crate howeih/Day-6-Postfix-notation 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 howeih/Day-6-Postfix-notation against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howeih/Day-6-Postfix-notation:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] e4238e7bbf42f0793f56f81f3c7773ad05065f4b1e0e1d9baee084df7d813487
[INFO] running `"docker" "start" "-a" "e4238e7bbf42f0793f56f81f3c7773ad05065f4b1e0e1d9baee084df7d813487"`
[INFO] [stderr]    Compiling postfix v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:6:39
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut ops = HashMap::<&str, Box<Fn(f64, f64)->f64>>::new();
[INFO] [stderr]   |                                       ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64)->f64`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut x: f64;
[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 0.56s
[INFO] running `"docker" "inspect" "e4238e7bbf42f0793f56f81f3c7773ad05065f4b1e0e1d9baee084df7d813487"`
[INFO] running `"docker" "rm" "-f" "e4238e7bbf42f0793f56f81f3c7773ad05065f4b1e0e1d9baee084df7d813487"`
[INFO] [stdout] e4238e7bbf42f0793f56f81f3c7773ad05065f4b1e0e1d9baee084df7d813487
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howeih/Day-6-Postfix-notation:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5d9cfeeb57da9109e1f5bafd5e5bc912092a272a51b955c432014b70ef98f4bf
[INFO] running `"docker" "start" "-a" "5d9cfeeb57da9109e1f5bafd5e5bc912092a272a51b955c432014b70ef98f4bf"`
[INFO] [stderr]    Compiling postfix v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:6:39
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut ops = HashMap::<&str, Box<Fn(f64, f64)->f64>>::new();
[INFO] [stderr]   |                                       ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64)->f64`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut x: f64;
[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 0.36s
[INFO] running `"docker" "inspect" "5d9cfeeb57da9109e1f5bafd5e5bc912092a272a51b955c432014b70ef98f4bf"`
[INFO] running `"docker" "rm" "-f" "5d9cfeeb57da9109e1f5bafd5e5bc912092a272a51b955c432014b70ef98f4bf"`
[INFO] [stdout] 5d9cfeeb57da9109e1f5bafd5e5bc912092a272a51b955c432014b70ef98f4bf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howeih/Day-6-Postfix-notation:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 4983e906a7a31a552e79871486175c52451ab96d1154126056dee20810533b28
[INFO] running `"docker" "start" "-a" "4983e906a7a31a552e79871486175c52451ab96d1154126056dee20810533b28"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/postfix-c892f7844f384cd4
[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" "4983e906a7a31a552e79871486175c52451ab96d1154126056dee20810533b28"`
[INFO] running `"docker" "rm" "-f" "4983e906a7a31a552e79871486175c52451ab96d1154126056dee20810533b28"`
[INFO] [stdout] 4983e906a7a31a552e79871486175c52451ab96d1154126056dee20810533b28