[INFO] updating cached repository nkmazur/cert_machine
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nkmazur/cert_machine
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nkmazur/cert_machine" "work/ex/beta-1.38-1/sources/1.37.0/gh/nkmazur/cert_machine"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nkmazur/cert_machine'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nkmazur/cert_machine" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nkmazur/cert_machine"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nkmazur/cert_machine'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f16cf4ed28eaff2fe5a7bb9b9212d56e33f69fc6
[INFO] sha for GitHub repo nkmazur/cert_machine: f16cf4ed28eaff2fe5a7bb9b9212d56e33f69fc6
[INFO] validating manifest of nkmazur/cert_machine 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 nkmazur/cert_machine 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 nkmazur/cert_machine
[INFO] finished frobbing nkmazur/cert_machine
[INFO] frobbed toml for nkmazur/cert_machine written to work/ex/beta-1.38-1/sources/1.37.0/gh/nkmazur/cert_machine/Cargo.toml
[INFO] started frobbing nkmazur/cert_machine
[INFO] finished frobbing nkmazur/cert_machine
[INFO] frobbed toml for nkmazur/cert_machine written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nkmazur/cert_machine/Cargo.toml
[INFO] crate nkmazur/cert_machine 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 nkmazur/cert_machine 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/nkmazur/cert_machine:/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] 0a1ae0ad523b7f0cd9db135e31cb51cfbb62a10f18fab2703b62708cd808054a
[INFO] running `"docker" "start" "-a" "0a1ae0ad523b7f0cd9db135e31cb51cfbb62a10f18fab2703b62708cd808054a"`
[INFO] [stderr]    Compiling openssl-sys v0.9.43
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_yaml v0.8.8
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling openssl v0.10.20
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling cert_machine v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:245:21
[INFO] [stderr]     |
[INFO] [stderr] 245 |                 let mut cert_filename = match instance.filename {
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:256:21
[INFO] [stderr]     |
[INFO] [stderr] 256 |                 let mut cert_filename = match instance.filename {
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:328:25
[INFO] [stderr]     |
[INFO] [stderr] 328 |                     let mut cert_filename = match instance.filename {
[INFO] [stderr]     |                         ----^^^^^^^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.32s
[INFO] running `"docker" "inspect" "0a1ae0ad523b7f0cd9db135e31cb51cfbb62a10f18fab2703b62708cd808054a"`
[INFO] running `"docker" "rm" "-f" "0a1ae0ad523b7f0cd9db135e31cb51cfbb62a10f18fab2703b62708cd808054a"`
[INFO] [stdout] 0a1ae0ad523b7f0cd9db135e31cb51cfbb62a10f18fab2703b62708cd808054a
[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/nkmazur/cert_machine:/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] 673c3aac9673286e2575ca3bcf1dea59332a1029b1663b97b349a93b3e88bc11
[INFO] running `"docker" "start" "-a" "673c3aac9673286e2575ca3bcf1dea59332a1029b1663b97b349a93b3e88bc11"`
[INFO] [stderr]    Compiling cert_machine v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:245:21
[INFO] [stderr]     |
[INFO] [stderr] 245 |                 let mut cert_filename = match instance.filename {
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:256:21
[INFO] [stderr]     |
[INFO] [stderr] 256 |                 let mut cert_filename = match instance.filename {
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:328:25
[INFO] [stderr]     |
[INFO] [stderr] 328 |                     let mut cert_filename = match instance.filename {
[INFO] [stderr]     |                         ----^^^^^^^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.81s
[INFO] running `"docker" "inspect" "673c3aac9673286e2575ca3bcf1dea59332a1029b1663b97b349a93b3e88bc11"`
[INFO] running `"docker" "rm" "-f" "673c3aac9673286e2575ca3bcf1dea59332a1029b1663b97b349a93b3e88bc11"`
[INFO] [stdout] 673c3aac9673286e2575ca3bcf1dea59332a1029b1663b97b349a93b3e88bc11
[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/nkmazur/cert_machine:/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] 23aeac64d0a303489f389b8e78bd326933a1e07df31a31dd3c986f8072db32a1
[INFO] running `"docker" "start" "-a" "23aeac64d0a303489f389b8e78bd326933a1e07df31a31dd3c986f8072db32a1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cert_machine-a13f5dc4d8d056a4
[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] [stderr]      Running /opt/crater/target/debug/deps/cert_machine-5d5a5b8e9a320ca5
[INFO] [stderr]    Doc-tests cert_machine
[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] [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" "23aeac64d0a303489f389b8e78bd326933a1e07df31a31dd3c986f8072db32a1"`
[INFO] running `"docker" "rm" "-f" "23aeac64d0a303489f389b8e78bd326933a1e07df31a31dd3c986f8072db32a1"`
[INFO] [stdout] 23aeac64d0a303489f389b8e78bd326933a1e07df31a31dd3c986f8072db32a1