[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 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/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] cbda8565a953af68f4d71c6d0a7f36e7fbe417fc5a0598bd762b22eb1f21c62d
[INFO] running `"docker" "start" "-a" "cbda8565a953af68f4d71c6d0a7f36e7fbe417fc5a0598bd762b22eb1f21c62d"`
[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 0.57s
[INFO] running `"docker" "inspect" "cbda8565a953af68f4d71c6d0a7f36e7fbe417fc5a0598bd762b22eb1f21c62d"`
[INFO] running `"docker" "rm" "-f" "cbda8565a953af68f4d71c6d0a7f36e7fbe417fc5a0598bd762b22eb1f21c62d"`
[INFO] [stdout] cbda8565a953af68f4d71c6d0a7f36e7fbe417fc5a0598bd762b22eb1f21c62d
[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/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 65a36d8bb17ec528b2ddc43224a0b61cfa9069bcdc19f9fdb1ddcafbbb6dcd3b
[INFO] running `"docker" "start" "-a" "65a36d8bb17ec528b2ddc43224a0b61cfa9069bcdc19f9fdb1ddcafbbb6dcd3b"`
[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 0.40s
[INFO] running `"docker" "inspect" "65a36d8bb17ec528b2ddc43224a0b61cfa9069bcdc19f9fdb1ddcafbbb6dcd3b"`
[INFO] running `"docker" "rm" "-f" "65a36d8bb17ec528b2ddc43224a0b61cfa9069bcdc19f9fdb1ddcafbbb6dcd3b"`
[INFO] [stdout] 65a36d8bb17ec528b2ddc43224a0b61cfa9069bcdc19f9fdb1ddcafbbb6dcd3b
[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/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 09f2b0bb0a0fce35a496a27fa0ade74a6fd6ccfab3bdbc3254239e617ddb1ad9
[INFO] running `"docker" "start" "-a" "09f2b0bb0a0fce35a496a27fa0ade74a6fd6ccfab3bdbc3254239e617ddb1ad9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/postfix-18638317c263bca9
[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" "09f2b0bb0a0fce35a496a27fa0ade74a6fd6ccfab3bdbc3254239e617ddb1ad9"`
[INFO] running `"docker" "rm" "-f" "09f2b0bb0a0fce35a496a27fa0ade74a6fd6ccfab3bdbc3254239e617ddb1ad9"`
[INFO] [stdout] 09f2b0bb0a0fce35a496a27fa0ade74a6fd6ccfab3bdbc3254239e617ddb1ad9