[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 try#b1f2594eac607c1f051534800237eeedb5590a49 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-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/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-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MuffadalKh0/Rust-Datastructure-with-HashMap-and-Tuple-v1 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07e0fc90c92c468215a4597c53fd4f5dc8eb7460e3aebd38a09dd93509cc315a
[INFO] running `Command { std: "docker" "start" "-a" "07e0fc90c92c468215a4597c53fd4f5dc8eb7460e3aebd38a09dd93509cc315a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07e0fc90c92c468215a4597c53fd4f5dc8eb7460e3aebd38a09dd93509cc315a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07e0fc90c92c468215a4597c53fd4f5dc8eb7460e3aebd38a09dd93509cc315a", kill_on_drop: false }`
[INFO] [stdout] 07e0fc90c92c468215a4597c53fd4f5dc8eb7460e3aebd38a09dd93509cc315a
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01465b01afbef3ea04e005953b0da6ba33473078ba8942d0cc6cf5db5760b2c5
[INFO] running `Command { std: "docker" "start" "-a" "01465b01afbef3ea04e005953b0da6ba33473078ba8942d0cc6cf5db5760b2c5", 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 unicode-width v0.1.6
[INFO] [stderr]     Checking encode_unicode v0.3.6
[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 6.29s
[INFO] running `Command { std: "docker" "inspect" "01465b01afbef3ea04e005953b0da6ba33473078ba8942d0cc6cf5db5760b2c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01465b01afbef3ea04e005953b0da6ba33473078ba8942d0cc6cf5db5760b2c5", kill_on_drop: false }`
[INFO] [stdout] 01465b01afbef3ea04e005953b0da6ba33473078ba8942d0cc6cf5db5760b2c5