[INFO] cloning repository https://github.com/al-jshen/mcmc-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/al-jshen/mcmc-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fal-jshen%2Fmcmc-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fal-jshen%2Fmcmc-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5a6f3ae03e9ddfbe743758c4088065bceca5b69
[INFO] checking al-jshen/mcmc-rs against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fal-jshen%2Fmcmc-rs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/al-jshen/mcmc-rs on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/al-jshen/mcmc-rs
[INFO] finished tweaking git repo https://github.com/al-jshen/mcmc-rs
[INFO] tweaked toml for git repo https://github.com/al-jshen/mcmc-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/al-jshen/mcmc-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1dae3818e7a1b24c1d9fd9a4ceb8c1b9260610620cb7be3ca5ec117befb40fe8
[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" "1dae3818e7a1b24c1d9fd9a4ceb8c1b9260610620cb7be3ca5ec117befb40fe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1dae3818e7a1b24c1d9fd9a4ceb8c1b9260610620cb7be3ca5ec117befb40fe8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dae3818e7a1b24c1d9fd9a4ceb8c1b9260610620cb7be3ca5ec117befb40fe8", kill_on_drop: false }`
[INFO] [stdout] 1dae3818e7a1b24c1d9fd9a4ceb8c1b9260610620cb7be3ca5ec117befb40fe8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 126862e96c9452c6afc43ad45384cff66e379c540c0fab03d3e55d4f96ca2685
[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" "126862e96c9452c6afc43ad45384cff66e379c540c0fab03d3e55d4f96ca2685", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling rayon-core v1.8.0
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking fastrand v1.3.5
[INFO] [stderr]     Checking approx_eq v0.1.3
[INFO] [stderr]     Checking compute v0.1.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking mcmc-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/sampler_linreg.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/sampler_linreg.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     if (lpdf2 > lpdf) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/sampler_linreg.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/sampler_linreg.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     if (lpdf2 > lpdf) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_iter`
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let n_iter = 3000;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_iter`
[INFO] [stdout]  --> src/sampler_linreg.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     n_iter: usize,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `propalpha`
[INFO] [stdout]   --> src/sampler_linreg.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     propalpha: Normal,      // how to draw proposals to change alpha param
[INFO] [stdout]    |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_propalpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `propbeta`
[INFO] [stdout]   --> src/sampler_linreg.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     propbeta: Normal,       // how to draw proposals to change beta param
[INFO] [stdout]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_propbeta`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `propsigma`
[INFO] [stdout]   --> src/sampler_linreg.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     propsigma: Normal,      // how to draw proposals to change sigma param
[INFO] [stdout]    |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_propsigma`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_iter`
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let n_iter = 3000;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_iter`
[INFO] [stdout]  --> src/sampler_linreg.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     n_iter: usize,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `propalpha`
[INFO] [stdout]   --> src/sampler_linreg.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     propalpha: Normal,      // how to draw proposals to change alpha param
[INFO] [stdout]    |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_propalpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `propbeta`
[INFO] [stdout]   --> src/sampler_linreg.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     propbeta: Normal,       // how to draw proposals to change beta param
[INFO] [stdout]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_propbeta`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `propsigma`
[INFO] [stdout]   --> src/sampler_linreg.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     propsigma: Normal,      // how to draw proposals to change sigma param
[INFO] [stdout]    |     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_propsigma`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.40s
[INFO] running `Command { std: "docker" "inspect" "126862e96c9452c6afc43ad45384cff66e379c540c0fab03d3e55d4f96ca2685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "126862e96c9452c6afc43ad45384cff66e379c540c0fab03d3e55d4f96ca2685", kill_on_drop: false }`
[INFO] [stdout] 126862e96c9452c6afc43ad45384cff66e379c540c0fab03d3e55d4f96ca2685