[INFO] cloning repository https://github.com/mefreanzy/RustyDSA
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mefreanzy/RustyDSA" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmefreanzy%2FRustyDSA", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmefreanzy%2FRustyDSA'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ede68575ff403d62b553da6100d1fd1d52562c19
[INFO] checking mefreanzy/RustyDSA against try#50b21af28e291c419ae81eebcb7705fb4200dc90 for pr-135167
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmefreanzy%2FRustyDSA" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mefreanzy/RustyDSA on toolchain 50b21af28e291c419ae81eebcb7705fb4200dc90
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50b21af28e291c419ae81eebcb7705fb4200dc90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mefreanzy/RustyDSA
[INFO] finished tweaking git repo https://github.com/mefreanzy/RustyDSA
[INFO] tweaked toml for git repo https://github.com/mefreanzy/RustyDSA written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mefreanzy/RustyDSA 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" "+50b21af28e291c419ae81eebcb7705fb4200dc90" "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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+50b21af28e291c419ae81eebcb7705fb4200dc90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52fe61c672e71dd2e5bde300221037ad939fd214d161e2e240bf6926a4fb7fc0
[INFO] running `Command { std: "docker" "start" "-a" "52fe61c672e71dd2e5bde300221037ad939fd214d161e2e240bf6926a4fb7fc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52fe61c672e71dd2e5bde300221037ad939fd214d161e2e240bf6926a4fb7fc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52fe61c672e71dd2e5bde300221037ad939fd214d161e2e240bf6926a4fb7fc0", kill_on_drop: false }`
[INFO] [stdout] 52fe61c672e71dd2e5bde300221037ad939fd214d161e2e240bf6926a4fb7fc0
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+50b21af28e291c419ae81eebcb7705fb4200dc90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8c04e4b42f3b6137c160dfc05dd0036e27cf72de77a2e0ca5d694a2669839e2
[INFO] running `Command { std: "docker" "start" "-a" "c8c04e4b42f3b6137c160dfc05dd0036e27cf72de77a2e0ca5d694a2669839e2", kill_on_drop: false }`
[INFO] [stderr]     Checking RustyDSA v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `RustyDSA` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `rusty_dsa`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `element_pop`
[INFO] [stdout]    --> src/data_structure/stack.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let element_pop = stack.pop();
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_element_pop`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `element_pop`
[INFO] [stdout]    --> src/data_structure/stack.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let element_pop = stack.pop();
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_element_pop`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_queue` is never used
[INFO] [stdout]    --> src/data_structure/queue.rs:101:8
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn test_queue()
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_heap` is never used
[INFO] [stdout]    --> src/data_structure/heap.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn test_heap()
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "c8c04e4b42f3b6137c160dfc05dd0036e27cf72de77a2e0ca5d694a2669839e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8c04e4b42f3b6137c160dfc05dd0036e27cf72de77a2e0ca5d694a2669839e2", kill_on_drop: false }`
[INFO] [stdout] c8c04e4b42f3b6137c160dfc05dd0036e27cf72de77a2e0ca5d694a2669839e2