[INFO] cloning repository https://github.com/ByteBuffer2022/Rust-Example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ByteBuffer2022/Rust-Example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByteBuffer2022%2FRust-Example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByteBuffer2022%2FRust-Example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca0c380f89d5f57a80f63aa119ee1c706a25768a
[INFO] building ByteBuffer2022/Rust-Example against try#334963c956d25708feab489a3816ae63f639355d for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FByteBuffer2022%2FRust-Example" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ByteBuffer2022/Rust-Example on toolchain 334963c956d25708feab489a3816ae63f639355d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ByteBuffer2022/Rust-Example
[INFO] finished tweaking git repo https://github.com/ByteBuffer2022/Rust-Example
[INFO] tweaked toml for git repo https://github.com/ByteBuffer2022/Rust-Example written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ByteBuffer2022/Rust-Example 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" "+334963c956d25708feab489a3816ae63f639355d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+334963c956d25708feab489a3816ae63f639355d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 498b8eb200cfbb6b335cfe34bf57a500e9caf506814da0f5df06079886be4d63
[INFO] running `Command { std: "docker" "start" "-a" "498b8eb200cfbb6b335cfe34bf57a500e9caf506814da0f5df06079886be4d63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "498b8eb200cfbb6b335cfe34bf57a500e9caf506814da0f5df06079886be4d63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "498b8eb200cfbb6b335cfe34bf57a500e9caf506814da0f5df06079886be4d63", kill_on_drop: false }`
[INFO] [stdout] 498b8eb200cfbb6b335cfe34bf57a500e9caf506814da0f5df06079886be4d63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+334963c956d25708feab489a3816ae63f639355d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9364171a02a47bda388d434c907a46bd28cd12a309ad4fdeeb250fa3cdcff065
[INFO] running `Command { std: "docker" "start" "-a" "9364171a02a47bda388d434c907a46bd28cd12a309ad4fdeeb250fa3cdcff065", kill_on_drop: false }`
[INFO] [stderr]    Compiling Rust-VN v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/main.rs:29:86
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...                          let mut f = BufReader::new(File::open(filename)?);   let mut contents = String::new();  
[INFO] [stdout]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/main.rs:29:139
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...pen(filename)?);   let mut contents = String::new();  
[INFO] [stdout]    |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:82
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...ing> {                                           let mut f = BufReader::new(File::open(filename)?);   let mut contents = String::new();  
[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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:135
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...mut f = BufReader::new(File::open(filename)?);   let mut contents = String::new();  
[INFO] [stdout]    |                                                         ----^^^^^^^^
[INFO] [stdout]    |                                                         |
[INFO] [stdout]    |                                                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "9364171a02a47bda388d434c907a46bd28cd12a309ad4fdeeb250fa3cdcff065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9364171a02a47bda388d434c907a46bd28cd12a309ad4fdeeb250fa3cdcff065", kill_on_drop: false }`
[INFO] [stdout] 9364171a02a47bda388d434c907a46bd28cd12a309ad4fdeeb250fa3cdcff065
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+334963c956d25708feab489a3816ae63f639355d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0018f9c06c4e45180c01743ebd9ba8c9a1df214427f3f345f4032033beb1575c
[INFO] running `Command { std: "docker" "start" "-a" "0018f9c06c4e45180c01743ebd9ba8c9a1df214427f3f345f4032033beb1575c", kill_on_drop: false }`
[INFO] [stderr]    Compiling Rust-VN v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/main.rs:29:86
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...                          let mut f = BufReader::new(File::open(filename)?);   let mut contents = String::new();  
[INFO] [stdout]    |                                      ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/main.rs:29:139
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...pen(filename)?);   let mut contents = String::new();  
[INFO] [stdout]    |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:82
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...ing> {                                           let mut f = BufReader::new(File::open(filename)?);   let mut contents = String::new();  
[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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:135
[INFO] [stdout]    |
[INFO] [stdout] 29 | ...mut f = BufReader::new(File::open(filename)?);   let mut contents = String::new();  
[INFO] [stdout]    |                                                         ----^^^^^^^^
[INFO] [stdout]    |                                                         |
[INFO] [stdout]    |                                                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "0018f9c06c4e45180c01743ebd9ba8c9a1df214427f3f345f4032033beb1575c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0018f9c06c4e45180c01743ebd9ba8c9a1df214427f3f345f4032033beb1575c", kill_on_drop: false }`
[INFO] [stdout] 0018f9c06c4e45180c01743ebd9ba8c9a1df214427f3f345f4032033beb1575c
