[INFO] cloning repository https://github.com/AbdelkaderBarhoumi21/Rust-Memory-Management
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AbdelkaderBarhoumi21/Rust-Memory-Management" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbdelkaderBarhoumi21%2FRust-Memory-Management", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbdelkaderBarhoumi21%2FRust-Memory-Management'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bee755c697e1c63c6d6137d93da9faab5f29597
[INFO] testing AbdelkaderBarhoumi21/Rust-Memory-Management against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbdelkaderBarhoumi21%2FRust-Memory-Management" "/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/AbdelkaderBarhoumi21/Rust-Memory-Management
[INFO] finished tweaking git repo https://github.com/AbdelkaderBarhoumi21/Rust-Memory-Management
[INFO] tweaked toml for git repo https://github.com/AbdelkaderBarhoumi21/Rust-Memory-Management written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AbdelkaderBarhoumi21/Rust-Memory-Management on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AbdelkaderBarhoumi21/Rust-Memory-Management 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6ccb601d5a70f43859cf89d9f86c9fa3eae8b8136331bdd17bf92363d80334c
[INFO] running `Command { std: "docker" "start" "-a" "e6ccb601d5a70f43859cf89d9f86c9fa3eae8b8136331bdd17bf92363d80334c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6ccb601d5a70f43859cf89d9f86c9fa3eae8b8136331bdd17bf92363d80334c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6ccb601d5a70f43859cf89d9f86c9fa3eae8b8136331bdd17bf92363d80334c", kill_on_drop: false }`
[INFO] [stdout] e6ccb601d5a70f43859cf89d9f86c9fa3eae8b8136331bdd17bf92363d80334c
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10f5c91124dee4a9dd5cf3a1b48d0990582cd525c8b55b74b7df33fc18efd080
[INFO] running `Command { std: "docker" "start" "-a" "10f5c91124dee4a9dd5cf3a1b48d0990582cd525c8b55b74b7df33fc18efd080", kill_on_drop: false }`
[INFO] [stderr]    Compiling memory_management_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut s3 = String::from("Borrowing example");
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "10f5c91124dee4a9dd5cf3a1b48d0990582cd525c8b55b74b7df33fc18efd080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10f5c91124dee4a9dd5cf3a1b48d0990582cd525c8b55b74b7df33fc18efd080", kill_on_drop: false }`
[INFO] [stdout] 10f5c91124dee4a9dd5cf3a1b48d0990582cd525c8b55b74b7df33fc18efd080
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 463b193c1b6a91caa081e4248c823be428e9419bc6ee4795d7fbe95f2734e9bf
[INFO] running `Command { std: "docker" "start" "-a" "463b193c1b6a91caa081e4248c823be428e9419bc6ee4795d7fbe95f2734e9bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling memory_management_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut s3 = String::from("Borrowing example");
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "463b193c1b6a91caa081e4248c823be428e9419bc6ee4795d7fbe95f2734e9bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "463b193c1b6a91caa081e4248c823be428e9419bc6ee4795d7fbe95f2734e9bf", kill_on_drop: false }`
[INFO] [stdout] 463b193c1b6a91caa081e4248c823be428e9419bc6ee4795d7fbe95f2734e9bf
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e528436cca6589a5dcb62cc1205b0a3474cd4d2fcec6e699202a562c6bf3fbe1
[INFO] running `Command { std: "docker" "start" "-a" "e528436cca6589a5dcb62cc1205b0a3474cd4d2fcec6e699202a562c6bf3fbe1", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] 
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 12 |     let mut s3 = String::from("Borrowing example");
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |         ----^^
[INFO] [stdout] 
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `memory_management_demo` (bin "memory_management_demo" test) generated 1 warning (run `cargo fix --bin "memory_management_demo" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/memory_management_demo-b9f549779586227e)
[INFO] running `Command { std: "docker" "inspect" "e528436cca6589a5dcb62cc1205b0a3474cd4d2fcec6e699202a562c6bf3fbe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e528436cca6589a5dcb62cc1205b0a3474cd4d2fcec6e699202a562c6bf3fbe1", kill_on_drop: false }`
[INFO] [stdout] e528436cca6589a5dcb62cc1205b0a3474cd4d2fcec6e699202a562c6bf3fbe1
