[INFO] cloning repository https://github.com/MuffadalKh0/Rust-Datastructure-with-HashMap-and-Tuple-v1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MuffadalKh0/Rust-Datastructure-with-HashMap-and-Tuple-v1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMuffadalKh0%2FRust-Datastructure-with-HashMap-and-Tuple-v1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMuffadalKh0%2FRust-Datastructure-with-HashMap-and-Tuple-v1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5143ab033e40f2e360325c6da6f9a7d73efaa49f
[INFO] checking MuffadalKh0/Rust-Datastructure-with-HashMap-and-Tuple-v1 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMuffadalKh0%2FRust-Datastructure-with-HashMap-and-Tuple-v1" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MuffadalKh0/Rust-Datastructure-with-HashMap-and-Tuple-v1
[INFO] finished tweaking git repo https://github.com/MuffadalKh0/Rust-Datastructure-with-HashMap-and-Tuple-v1
[INFO] tweaked toml for git repo https://github.com/MuffadalKh0/Rust-Datastructure-with-HashMap-and-Tuple-v1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MuffadalKh0/Rust-Datastructure-with-HashMap-and-Tuple-v1 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MuffadalKh0/Rust-Datastructure-with-HashMap-and-Tuple-v1 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.46
[INFO] [stderr]   Downloaded serde v1.0.102
[INFO] [stderr]   Downloaded synstructure v0.12.1
[INFO] [stderr]   Downloaded syn v1.0.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08d088aead9682c157f399ffcbe155c33eabc8638a89c6071543f0464c5ae956
[INFO] running `Command { std: "docker" "start" "-a" "08d088aead9682c157f399ffcbe155c33eabc8638a89c6071543f0464c5ae956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08d088aead9682c157f399ffcbe155c33eabc8638a89c6071543f0464c5ae956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08d088aead9682c157f399ffcbe155c33eabc8638a89c6071543f0464c5ae956", kill_on_drop: false }`
[INFO] [stdout] 08d088aead9682c157f399ffcbe155c33eabc8638a89c6071543f0464c5ae956
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 391eb18be0f39240079149a1361278143a56bf8e59506e8d86f85e94cf30ac70
[INFO] running `Command { std: "docker" "start" "-a" "391eb18be0f39240079149a1361278143a56bf8e59506e8d86f85e94cf30ac70", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking text_io v0.1.7
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking t5 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:32:22
[INFO] [stdout]    |
[INFO] [stdout] 32 |         for value in students.get(&sid){
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 32 -         for value in students.get(&sid){
[INFO] [stdout] 32 +         while let Some(value) = students.get(&sid){
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 32 -         for value in students.get(&sid){
[INFO] [stdout] 32 +         if let Some(value) = students.get(&sid){
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:32:22
[INFO] [stdout]    |
[INFO] [stdout] 32 |         for value in students.get(&sid){
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 32 -         for value in students.get(&sid){
[INFO] [stdout] 32 +         while let Some(value) = students.get(&sid){
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 32 -         for value in students.get(&sid){
[INFO] [stdout] 32 +         if let Some(value) = students.get(&sid){
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.51s
[INFO] running `Command { std: "docker" "inspect" "391eb18be0f39240079149a1361278143a56bf8e59506e8d86f85e94cf30ac70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "391eb18be0f39240079149a1361278143a56bf8e59506e8d86f85e94cf30ac70", kill_on_drop: false }`
[INFO] [stdout] 391eb18be0f39240079149a1361278143a56bf8e59506e8d86f85e94cf30ac70