[INFO] updating cached repository fyrchik/ebola
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fyrchik/ebola
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fyrchik/ebola" "work/ex/beta-1.38-1/sources/1.37.0/gh/fyrchik/ebola"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/fyrchik/ebola'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fyrchik/ebola" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fyrchik/ebola"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fyrchik/ebola'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7f682f9305f0900b7f72bebda0ce02459a023f61
[INFO] sha for GitHub repo fyrchik/ebola: 7f682f9305f0900b7f72bebda0ce02459a023f61
[INFO] validating manifest of fyrchik/ebola 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 fyrchik/ebola 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 fyrchik/ebola
[INFO] finished frobbing fyrchik/ebola
[INFO] frobbed toml for fyrchik/ebola written to work/ex/beta-1.38-1/sources/1.37.0/gh/fyrchik/ebola/Cargo.toml
[INFO] started frobbing fyrchik/ebola
[INFO] finished frobbing fyrchik/ebola
[INFO] frobbed toml for fyrchik/ebola written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fyrchik/ebola/Cargo.toml
[INFO] crate fyrchik/ebola 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 fyrchik/ebola 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-4/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/fyrchik/ebola:/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] 20a581ec35a15d9728ba3794a2c59fdd266127c69ddf1bd915c430548956eb62
[INFO] running `"docker" "start" "-a" "20a581ec35a15d9728ba3794a2c59fdd266127c69ddf1bd915c430548956eb62"`
[INFO] [stderr]    Compiling ebola v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `t` is never read
[INFO] [stderr]    --> src/main.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let mut t = 0;
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:66:13
[INFO] [stderr]     |
[INFO] [stderr] 66  |         let mut t = $f(&a1, &a2);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 113 |     compose12!(t, sum, sum, sum2, 2 3);
[INFO] [stderr]     |     ----------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "20a581ec35a15d9728ba3794a2c59fdd266127c69ddf1bd915c430548956eb62"`
[INFO] running `"docker" "rm" "-f" "20a581ec35a15d9728ba3794a2c59fdd266127c69ddf1bd915c430548956eb62"`
[INFO] [stdout] 20a581ec35a15d9728ba3794a2c59fdd266127c69ddf1bd915c430548956eb62
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/fyrchik/ebola:/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] 1b3cdf233961345d97112c7479abe65ff9fb2606e2af49e6050453ee544f4b3c
[INFO] running `"docker" "start" "-a" "1b3cdf233961345d97112c7479abe65ff9fb2606e2af49e6050453ee544f4b3c"`
[INFO] [stderr]    Compiling ebola v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `t` is never read
[INFO] [stderr]    --> src/main.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let mut t = 0;
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:66:13
[INFO] [stderr]     |
[INFO] [stderr] 66  |         let mut t = $f(&a1, &a2);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 113 |     compose12!(t, sum, sum, sum2, 2 3);
[INFO] [stderr]     |     ----------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "1b3cdf233961345d97112c7479abe65ff9fb2606e2af49e6050453ee544f4b3c"`
[INFO] running `"docker" "rm" "-f" "1b3cdf233961345d97112c7479abe65ff9fb2606e2af49e6050453ee544f4b3c"`
[INFO] [stdout] 1b3cdf233961345d97112c7479abe65ff9fb2606e2af49e6050453ee544f4b3c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/fyrchik/ebola:/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] 0f4769f9cf509652d4a61aa3773ba9706278a8f0afb5c9a9e1dafb366ecb3760
[INFO] running `"docker" "start" "-a" "0f4769f9cf509652d4a61aa3773ba9706278a8f0afb5c9a9e1dafb366ecb3760"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ebola-b270ffbe725c4ac4
[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" "0f4769f9cf509652d4a61aa3773ba9706278a8f0afb5c9a9e1dafb366ecb3760"`
[INFO] running `"docker" "rm" "-f" "0f4769f9cf509652d4a61aa3773ba9706278a8f0afb5c9a9e1dafb366ecb3760"`
[INFO] [stdout] 0f4769f9cf509652d4a61aa3773ba9706278a8f0afb5c9a9e1dafb366ecb3760