[INFO] cloning repository https://github.com/bmcase/non_negative_DP
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bmcase/non_negative_DP" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmcase%2Fnon_negative_DP", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmcase%2Fnon_negative_DP'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fadd9e36734d34d593d1b48d6fd79deafd9c023
[INFO] checking bmcase/non_negative_DP against try#4e55a504843955c97eb06907c71f6f3e99208021 for pr-146978
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbmcase%2Fnon_negative_DP" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bmcase/non_negative_DP
[INFO] finished tweaking git repo https://github.com/bmcase/non_negative_DP
[INFO] tweaked toml for git repo https://github.com/bmcase/non_negative_DP written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bmcase/non_negative_DP on toolchain 4e55a504843955c97eb06907c71f6f3e99208021
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bmcase/non_negative_DP already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c9532c795e2991ecce1fab3c50626ff912d74f50c4ccb0b9afa41262a19df3d
[INFO] running `Command { std: "docker" "start" "-a" "2c9532c795e2991ecce1fab3c50626ff912d74f50c4ccb0b9afa41262a19df3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c9532c795e2991ecce1fab3c50626ff912d74f50c4ccb0b9afa41262a19df3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c9532c795e2991ecce1fab3c50626ff912d74f50c4ccb0b9afa41262a19df3d", kill_on_drop: false }`
[INFO] [stdout] 2c9532c795e2991ecce1fab3c50626ff912d74f50c4ccb0b9afa41262a19df3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2412ea16b7dc416ec436dfaa9e73f29083325439972a7bc06381a153a59e9cd3
[INFO] running `Command { std: "docker" "start" "-a" "2412ea16b7dc416ec436dfaa9e73f29083325439972a7bc06381a153a59e9cd3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking non_neg_dp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_geometric` is never used
[INFO] [stdout]   --> src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn generate_geometric(probability: f64) -> isize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_double_geometric` is never used
[INFO] [stdout]   --> src/main.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn generate_double_geometric(s: f64, n: isize) -> isize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_double_geometric_rng` is never used
[INFO] [stdout]   --> src/main.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn generate_double_geometric_rng<R: Rng + ?Sized>(s: f64, n: isize, rng: &mut R) -> isize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_truncated_double_geometric` is never used
[INFO] [stdout]    --> src/main.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn generate_truncated_double_geometric(s: f64, n: isize) -> isize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let mut num_samples = 100000;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_double_geometric_rng` is never used
[INFO] [stdout]   --> src/main.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn generate_double_geometric_rng<R: Rng + ?Sized>(s: f64, n: isize, rng: &mut R) -> isize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "2412ea16b7dc416ec436dfaa9e73f29083325439972a7bc06381a153a59e9cd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2412ea16b7dc416ec436dfaa9e73f29083325439972a7bc06381a153a59e9cd3", kill_on_drop: false }`
[INFO] [stdout] 2412ea16b7dc416ec436dfaa9e73f29083325439972a7bc06381a153a59e9cd3