[INFO] cloning repository https://github.com/AR-developer197/GrokkingAlgorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AR-developer197/GrokkingAlgorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAR-developer197%2FGrokkingAlgorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAR-developer197%2FGrokkingAlgorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1beba3ee050cd7cbee30706ab3013526de50eb70
[INFO] checking AR-developer197/GrokkingAlgorithms against master#f2c70877a7dbc51cd98e2d5d25209b24d4a586d5 for pr-150097
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAR-developer197%2FGrokkingAlgorithms" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AR-developer197/GrokkingAlgorithms
[INFO] finished tweaking git repo https://github.com/AR-developer197/GrokkingAlgorithms
[INFO] tweaked toml for git repo https://github.com/AR-developer197/GrokkingAlgorithms written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AR-developer197/GrokkingAlgorithms on toolchain f2c70877a7dbc51cd98e2d5d25209b24d4a586d5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f2c70877a7dbc51cd98e2d5d25209b24d4a586d5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AR-developer197/GrokkingAlgorithms 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" "+f2c70877a7dbc51cd98e2d5d25209b24d4a586d5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+f2c70877a7dbc51cd98e2d5d25209b24d4a586d5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a23364e850c53ed71baaf0ebe073e7f9e1e9b05617cdca2befb8d6b3f541d667
[INFO] running `Command { std: "docker" "start" "-a" "a23364e850c53ed71baaf0ebe073e7f9e1e9b05617cdca2befb8d6b3f541d667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a23364e850c53ed71baaf0ebe073e7f9e1e9b05617cdca2befb8d6b3f541d667", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a23364e850c53ed71baaf0ebe073e7f9e1e9b05617cdca2befb8d6b3f541d667", kill_on_drop: false }`
[INFO] [stdout] a23364e850c53ed71baaf0ebe073e7f9e1e9b05617cdca2befb8d6b3f541d667
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+f2c70877a7dbc51cd98e2d5d25209b24d4a586d5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ab546e510c99a0ed362f5185159f91c9c6a30cdb47ca9386a0007f63c44fb4d
[INFO] running `Command { std: "docker" "start" "-a" "5ab546e510c99a0ed362f5185159f91c9c6a30cdb47ca9386a0007f63c44fb4d", kill_on_drop: false }`
[INFO] [stderr]     Checking algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::StderrLock`
[INFO] [stdout]  --> src/main.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{hash::{DefaultHasher, Hash, Hasher}, io::StderrLock, vec};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/main.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     let val = hashmap.get(10);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::StderrLock`
[INFO] [stdout]  --> src/main.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{hash::{DefaultHasher, Hash, Hasher}, io::StderrLock, vec};
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/main.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     let val = hashmap.get(10);
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "5ab546e510c99a0ed362f5185159f91c9c6a30cdb47ca9386a0007f63c44fb4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ab546e510c99a0ed362f5185159f91c9c6a30cdb47ca9386a0007f63c44fb4d", kill_on_drop: false }`
[INFO] [stdout] 5ab546e510c99a0ed362f5185159f91c9c6a30cdb47ca9386a0007f63c44fb4d
