[INFO] updating cached repository Jon-Davis/calc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Jon-Davis/calc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Jon-Davis/calc" "work/ex/beta-1.38-1/sources/1.37.0/gh/Jon-Davis/calc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Jon-Davis/calc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Jon-Davis/calc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jon-Davis/calc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jon-Davis/calc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13b1de91d032ba24ca1775141210df957100ae33
[INFO] sha for GitHub repo Jon-Davis/calc: 13b1de91d032ba24ca1775141210df957100ae33
[INFO] validating manifest of Jon-Davis/calc 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 Jon-Davis/calc 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 Jon-Davis/calc
[INFO] finished frobbing Jon-Davis/calc
[INFO] frobbed toml for Jon-Davis/calc written to work/ex/beta-1.38-1/sources/1.37.0/gh/Jon-Davis/calc/Cargo.toml
[INFO] started frobbing Jon-Davis/calc
[INFO] finished frobbing Jon-Davis/calc
[INFO] frobbed toml for Jon-Davis/calc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jon-Davis/calc/Cargo.toml
[INFO] crate Jon-Davis/calc 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 Jon-Davis/calc 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/Jon-Davis/calc:/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] 5836f50d5bd88b996366adf679c0cdc6350705e114aadfecc5631b5e3e23f8a8
[INFO] running `"docker" "start" "-a" "5836f50d5bd88b996366adf679c0cdc6350705e114aadfecc5631b5e3e23f8a8"`
[INFO] [stderr]    Compiling calc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Div`, `Rem`
[INFO] [stderr]   --> src/integer.rs:12:26
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::ops::{Add, Sub, Div, Mul, Rem, Neg};
[INFO] [stderr]    |                          ^^^       ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/integer.rs:90:12
[INFO] [stderr]    |
[INFO] [stderr] 90 |         if (other.negative) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "5836f50d5bd88b996366adf679c0cdc6350705e114aadfecc5631b5e3e23f8a8"`
[INFO] running `"docker" "rm" "-f" "5836f50d5bd88b996366adf679c0cdc6350705e114aadfecc5631b5e3e23f8a8"`
[INFO] [stdout] 5836f50d5bd88b996366adf679c0cdc6350705e114aadfecc5631b5e3e23f8a8
[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/Jon-Davis/calc:/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] cfd06f35ef7c3dd87b05af52cf3c5d34301121cf9e07e9422e6f3b945f90f2f7
[INFO] running `"docker" "start" "-a" "cfd06f35ef7c3dd87b05af52cf3c5d34301121cf9e07e9422e6f3b945f90f2f7"`
[INFO] [stderr]    Compiling calc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Div`, `Rem`
[INFO] [stderr]   --> src/integer.rs:12:26
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::ops::{Add, Sub, Div, Mul, Rem, Neg};
[INFO] [stderr]    |                          ^^^       ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/integer.rs:90:12
[INFO] [stderr]    |
[INFO] [stderr] 90 |         if (other.negative) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `"docker" "inspect" "cfd06f35ef7c3dd87b05af52cf3c5d34301121cf9e07e9422e6f3b945f90f2f7"`
[INFO] running `"docker" "rm" "-f" "cfd06f35ef7c3dd87b05af52cf3c5d34301121cf9e07e9422e6f3b945f90f2f7"`
[INFO] [stdout] cfd06f35ef7c3dd87b05af52cf3c5d34301121cf9e07e9422e6f3b945f90f2f7
[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/Jon-Davis/calc:/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] bde53730fe71c0351b8286e45cd99fb7bd68271bdd10134794d648f9dc0d4b72
[INFO] running `"docker" "start" "-a" "bde53730fe71c0351b8286e45cd99fb7bd68271bdd10134794d648f9dc0d4b72"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/calc-9aa0f74d2a505a45
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test integer::integer_add_test ... ok
[INFO] [stdout] test integer::integer_loop_mul_test ... ok
[INFO] [stdout] test integer::integer_loop_pow_test ... ok
[INFO] [stdout] test integer::interger_mul_test ... ok
[INFO] [stdout] test integer::integer_ordering_test ... ok
[INFO] [stdout] test integer::integer_loop_add_test ... ok
[INFO] [stdout] test integer::integer_equality_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "bde53730fe71c0351b8286e45cd99fb7bd68271bdd10134794d648f9dc0d4b72"`
[INFO] running `"docker" "rm" "-f" "bde53730fe71c0351b8286e45cd99fb7bd68271bdd10134794d648f9dc0d4b72"`
[INFO] [stdout] bde53730fe71c0351b8286e45cd99fb7bd68271bdd10134794d648f9dc0d4b72