[INFO] cloning repository https://github.com/RYOSKATE/dueling_bandits_simulator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RYOSKATE/dueling_bandits_simulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRYOSKATE%2Fdueling_bandits_simulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRYOSKATE%2Fdueling_bandits_simulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b8aee0d5a9b8b673c11254827edf95afdf81834
[INFO] checking RYOSKATE/dueling_bandits_simulator against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRYOSKATE%2Fdueling_bandits_simulator" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RYOSKATE/dueling_bandits_simulator on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RYOSKATE/dueling_bandits_simulator
[INFO] finished tweaking git repo https://github.com/RYOSKATE/dueling_bandits_simulator
[INFO] tweaked toml for git repo https://github.com/RYOSKATE/dueling_bandits_simulator written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/RYOSKATE/dueling_bandits_simulator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 376738da68a9100a3d88495503566f2fafa46235b16930e00e51ed7d1e0da11c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "376738da68a9100a3d88495503566f2fafa46235b16930e00e51ed7d1e0da11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "376738da68a9100a3d88495503566f2fafa46235b16930e00e51ed7d1e0da11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "376738da68a9100a3d88495503566f2fafa46235b16930e00e51ed7d1e0da11c", kill_on_drop: false }`
[INFO] [stdout] 376738da68a9100a3d88495503566f2fafa46235b16930e00e51ed7d1e0da11c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 909570d1d6905e69d1505be33758db5377ed159eeaea0d11ec3dc50c45613216
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "909570d1d6905e69d1505be33758db5377ed159eeaea0d11ec3dc50c45613216", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking dueling_bandits_simulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `iDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:206:17
[INFO] [stdout]     |
[INFO] [stdout] 206 |         let mut iDCG = duelists.first().unwrap().ideal_borda_score;
[INFO] [stdout]     |                 ^^^^ help: convert the identifier to snake case: `i_dcg`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:211:17
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let mut rDCG = duelists.first().unwrap().real_borda_score;
[INFO] [stdout]     |                 ^^^^ help: convert the identifier to snake case: `r_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:216:13
[INFO] [stdout]     |
[INFO] [stdout] 216 |         let nDCG = rDCG / iDCG;
[INFO] [stdout]     |             ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `iDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:206:17
[INFO] [stdout]     |
[INFO] [stdout] 206 |         let mut iDCG = duelists.first().unwrap().ideal_borda_score;
[INFO] [stdout]     |                 ^^^^ help: convert the identifier to snake case: `i_dcg`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:211:17
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let mut rDCG = duelists.first().unwrap().real_borda_score;
[INFO] [stdout]     |                 ^^^^ help: convert the identifier to snake case: `r_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nDCG` should have a snake case name
[INFO] [stdout]    --> src/main.rs:216:13
[INFO] [stdout]     |
[INFO] [stdout] 216 |         let nDCG = rDCG / iDCG;
[INFO] [stdout]     |             ^^^^ help: convert the identifier to snake case: `n_dcg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.05s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "909570d1d6905e69d1505be33758db5377ed159eeaea0d11ec3dc50c45613216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "909570d1d6905e69d1505be33758db5377ed159eeaea0d11ec3dc50c45613216", kill_on_drop: false }`
[INFO] [stdout] 909570d1d6905e69d1505be33758db5377ed159eeaea0d11ec3dc50c45613216