[INFO] updating cached repository zx9w/old-rust-homework
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zx9w/old-rust-homework
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zx9w/old-rust-homework" "work/ex/beta-1.38-1/sources/1.37.0/gh/zx9w/old-rust-homework"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/zx9w/old-rust-homework'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zx9w/old-rust-homework" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zx9w/old-rust-homework"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zx9w/old-rust-homework'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d70dc616dbbf236976426810837a9576c5eaa1be
[INFO] sha for GitHub repo zx9w/old-rust-homework: d70dc616dbbf236976426810837a9576c5eaa1be
[INFO] validating manifest of zx9w/old-rust-homework 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 zx9w/old-rust-homework 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 zx9w/old-rust-homework
[INFO] finished frobbing zx9w/old-rust-homework
[INFO] frobbed toml for zx9w/old-rust-homework written to work/ex/beta-1.38-1/sources/1.37.0/gh/zx9w/old-rust-homework/Cargo.toml
[INFO] started frobbing zx9w/old-rust-homework
[INFO] finished frobbing zx9w/old-rust-homework
[INFO] frobbed toml for zx9w/old-rust-homework written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zx9w/old-rust-homework/Cargo.toml
[INFO] crate zx9w/old-rust-homework 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 zx9w/old-rust-homework 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-2/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/zx9w/old-rust-homework:/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] 7d0e9e4e4c56a4f3575869c60e77e57b709c20dfcb7816c5ec3fa71a4c79e2b4
[INFO] running `"docker" "start" "-a" "7d0e9e4e4c56a4f3575869c60e77e57b709c20dfcb7816c5ec3fa71a4c79e2b4"`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling vika5 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `h1`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let h1 = vec![195, 204, 395, 409, 595, 618,795,836,995,1072,1195,1344,1395];
[INFO] [stderr]   |         ^^ help: consider prefixing with an underscore: `_h1`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> src/main.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let mut x: f64 = 0.0;
[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: function is never used: `generate_hotels`
[INFO] [stderr]   --> src/main.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn generate_hotels(n: usize) -> Vec<i64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.68s
[INFO] running `"docker" "inspect" "7d0e9e4e4c56a4f3575869c60e77e57b709c20dfcb7816c5ec3fa71a4c79e2b4"`
[INFO] running `"docker" "rm" "-f" "7d0e9e4e4c56a4f3575869c60e77e57b709c20dfcb7816c5ec3fa71a4c79e2b4"`
[INFO] [stdout] 7d0e9e4e4c56a4f3575869c60e77e57b709c20dfcb7816c5ec3fa71a4c79e2b4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/zx9w/old-rust-homework:/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] 1a53c2d9e82c9e8e20e25ef6a8d5d980505ff44dcef1ced03efbae61a242ce20
[INFO] running `"docker" "start" "-a" "1a53c2d9e82c9e8e20e25ef6a8d5d980505ff44dcef1ced03efbae61a242ce20"`
[INFO] [stderr]    Compiling vika5 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `h1`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let h1 = vec![195, 204, 395, 409, 595, 618,795,836,995,1072,1195,1344,1395];
[INFO] [stderr]   |         ^^ help: consider prefixing with an underscore: `_h1`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `x` is never read
[INFO] [stderr]   --> src/main.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let mut x: f64 = 0.0;
[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: function is never used: `generate_hotels`
[INFO] [stderr]   --> src/main.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn generate_hotels(n: usize) -> Vec<i64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "1a53c2d9e82c9e8e20e25ef6a8d5d980505ff44dcef1ced03efbae61a242ce20"`
[INFO] running `"docker" "rm" "-f" "1a53c2d9e82c9e8e20e25ef6a8d5d980505ff44dcef1ced03efbae61a242ce20"`
[INFO] [stdout] 1a53c2d9e82c9e8e20e25ef6a8d5d980505ff44dcef1ced03efbae61a242ce20
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/zx9w/old-rust-homework:/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] 78ea98a5b53ba90e63f252ad9d04bb80f79767d0eee05443573cfd226fb94402
[INFO] running `"docker" "start" "-a" "78ea98a5b53ba90e63f252ad9d04bb80f79767d0eee05443573cfd226fb94402"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[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/vika5-19cf1d5f90b020d3
[INFO] running `"docker" "inspect" "78ea98a5b53ba90e63f252ad9d04bb80f79767d0eee05443573cfd226fb94402"`
[INFO] running `"docker" "rm" "-f" "78ea98a5b53ba90e63f252ad9d04bb80f79767d0eee05443573cfd226fb94402"`
[INFO] [stdout] 78ea98a5b53ba90e63f252ad9d04bb80f79767d0eee05443573cfd226fb94402