[INFO] updating cached repository https://github.com/chrisshyi/Karger-MinCut [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 042eb28c16ac6af3718886f51b62cd68380df0ef [INFO] checking chrisshyi/Karger-MinCut against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisshyi%2FKarger-MinCut" "/workspace/builds/worker-12/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/chrisshyi/Karger-MinCut on toolchain b61e69433951e31f7bd746e22f516a48ad41623b [INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/chrisshyi/Karger-MinCut [INFO] finished tweaking git repo https://github.com/chrisshyi/Karger-MinCut [INFO] tweaked toml for git repo https://github.com/chrisshyi/Karger-MinCut written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/chrisshyi/Karger-MinCut already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 0efdd2b8c96a2605dd0ede0f5a1db6fe083b3fc835a704bc7e71619b0633a41e [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "0efdd2b8c96a2605dd0ede0f5a1db6fe083b3fc835a704bc7e71619b0633a41e"` [INFO] [stderr] Checking rand_core v0.1.0-pre.0 [INFO] [stderr] Checking rand v0.5.0-pre.0 [INFO] [stderr] Checking karger-min-cut v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `thread_rng` [INFO] [stderr] --> src/main.rs:2:48 [INFO] [stderr] | [INFO] [stderr] 2 | use std::collections::HashMap; use rand::{Rng, thread_rng}; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `E` [INFO] [stderr] --> src/main.rs:128:17 [INFO] [stderr] | [INFO] [stderr] 128 | Err(E) => panic!("line reading failure") [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_E` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num_vertx` [INFO] [stderr] --> src/main.rs:159:9 [INFO] [stderr] | [INFO] [stderr] 159 | let num_vertx: f64 = active_vertx.len() as f64; [INFO] [stderr] | ^^^^^^^^^ help: consider prefixing with an underscore: `_num_vertx` [INFO] [stderr] [INFO] [stderr] warning: variable `E` should have a snake case name [INFO] [stderr] --> src/main.rs:128:17 [INFO] [stderr] | [INFO] [stderr] 128 | Err(E) => panic!("line reading failure") [INFO] [stderr] | ^ help: convert the identifier to snake case: `e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `thread_rng` [INFO] [stderr] --> src/main.rs:2:48 [INFO] [stderr] | [INFO] [stderr] 2 | use std::collections::HashMap; use rand::{Rng, thread_rng}; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `E` [INFO] [stderr] --> src/main.rs:128:17 [INFO] [stderr] | [INFO] [stderr] 128 | Err(E) => panic!("line reading failure") [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_E` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num_vertx` [INFO] [stderr] --> src/main.rs:159:9 [INFO] [stderr] | [INFO] [stderr] 159 | let num_vertx: f64 = active_vertx.len() as f64; [INFO] [stderr] | ^^^^^^^^^ help: consider prefixing with an underscore: `_num_vertx` [INFO] [stderr] [INFO] [stderr] warning: variable `E` should have a snake case name [INFO] [stderr] --> src/main.rs:128:17 [INFO] [stderr] | [INFO] [stderr] 128 | Err(E) => panic!("line reading failure") [INFO] [stderr] | ^ help: convert the identifier to snake case: `e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.27s [INFO] running `"docker" "inspect" "0efdd2b8c96a2605dd0ede0f5a1db6fe083b3fc835a704bc7e71619b0633a41e"` [INFO] running `"docker" "rm" "-f" "0efdd2b8c96a2605dd0ede0f5a1db6fe083b3fc835a704bc7e71619b0633a41e"` [INFO] [stdout] 0efdd2b8c96a2605dd0ede0f5a1db6fe083b3fc835a704bc7e71619b0633a41e