[INFO] cloning repository https://github.com/Allin2000/fib_rust_boost_py
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Allin2000/fib_rust_boost_py" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAllin2000%2Ffib_rust_boost_py", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAllin2000%2Ffib_rust_boost_py'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d2d544d5e2ab7e9ead02b3f8c4cbe80a4a9ecf9f
[INFO] checking Allin2000/fib_rust_boost_py against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAllin2000%2Ffib_rust_boost_py" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Allin2000/fib_rust_boost_py
[INFO] finished tweaking git repo https://github.com/Allin2000/fib_rust_boost_py
[INFO] tweaked toml for git repo https://github.com/Allin2000/fib_rust_boost_py written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Allin2000/fib_rust_boost_py on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Allin2000/fib_rust_boost_py 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbbc51ad9371f6dcc70a816395e82595fa5420b731e27b4cfebdaad1ee88598f
[INFO] running `Command { std: "docker" "start" "-a" "fbbc51ad9371f6dcc70a816395e82595fa5420b731e27b4cfebdaad1ee88598f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbbc51ad9371f6dcc70a816395e82595fa5420b731e27b4cfebdaad1ee88598f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbbc51ad9371f6dcc70a816395e82595fa5420b731e27b4cfebdaad1ee88598f", kill_on_drop: false }`
[INFO] [stdout] fbbc51ad9371f6dcc70a816395e82595fa5420b731e27b4cfebdaad1ee88598f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 314eec632511a91ed77ac8b568619950d7b2f485e2f9260600e38c7b444d5c25
[INFO] running `Command { std: "docker" "start" "-a" "314eec632511a91ed77ac8b568619950d7b2f485e2f9260600e38c7b444d5c25", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.13.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]     Checking unindent v0.2.4
[INFO] [stderr]    Compiling pyo3-build-config v0.25.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling pyo3-macros-backend v0.25.1
[INFO] [stderr]    Compiling pyo3-ffi v0.25.1
[INFO] [stderr]    Compiling pyo3 v0.25.1
[INFO] [stderr]    Compiling pyo3-macros v0.25.1
[INFO] [stderr]     Checking fib_rust_boost_py v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]  --> src/lib.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn fibonacci_normal_rust(n: u64) -> u64 {
[INFO] [stdout]   |                                     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:16:42
[INFO] [stdout]    |
[INFO] [stdout] 16 |   fn fibonacci_optimized_rust(n: u64) -> u64 {
[INFO] [stdout]    |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fib_rust_boost_py` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]  --> src/lib.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn fibonacci_normal_rust(n: u64) -> u64 {
[INFO] [stdout]   |                                     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:16:42
[INFO] [stdout]    |
[INFO] [stdout] 16 |   fn fibonacci_optimized_rust(n: u64) -> u64 {
[INFO] [stdout]    |                                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fib_rust_boost_py` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "314eec632511a91ed77ac8b568619950d7b2f485e2f9260600e38c7b444d5c25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "314eec632511a91ed77ac8b568619950d7b2f485e2f9260600e38c7b444d5c25", kill_on_drop: false }`
[INFO] [stdout] 314eec632511a91ed77ac8b568619950d7b2f485e2f9260600e38c7b444d5c25