[INFO] cloning repository https://github.com/Gokul2406/ff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Gokul2406/ff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGokul2406%2Fff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGokul2406%2Fff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a38fa770ec14890d9004600d09c2f203501b8f65
[INFO] checking Gokul2406/ff against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGokul2406%2Fff" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Gokul2406/ff
[INFO] finished tweaking git repo https://github.com/Gokul2406/ff
[INFO] tweaked toml for git repo https://github.com/Gokul2406/ff written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Gokul2406/ff 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/Gokul2406/ff 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] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c88bf4241d15433d0ad5c031ec243b8133499bb831d0e66d3e01aecc8d1a5ed2
[INFO] running `Command { std: "docker" "start" "-a" "c88bf4241d15433d0ad5c031ec243b8133499bb831d0e66d3e01aecc8d1a5ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c88bf4241d15433d0ad5c031ec243b8133499bb831d0e66d3e01aecc8d1a5ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c88bf4241d15433d0ad5c031ec243b8133499bb831d0e66d3e01aecc8d1a5ed2", kill_on_drop: false }`
[INFO] [stdout] c88bf4241d15433d0ad5c031ec243b8133499bb831d0e66d3e01aecc8d1a5ed2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 79e6852c5541fefc3c8c88f70839b6cf7c0cbb0ec9d4963d01a15b6d8ca08586
[INFO] running `Command { std: "docker" "start" "-a" "79e6852c5541fefc3c8c88f70839b6cf7c0cbb0ec9d4963d01a15b6d8ca08586", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking ff-util v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Result`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lib.rs:18:49
[INFO] [stdout]    |
[INFO] [stdout] 18 | ...                   for matched_file in &file {
[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] 18 -                             for matched_file in &file {
[INFO] [stdout] 18 +                             while let Ok(matched_file) = &file {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 18 -                             for matched_file in &file {
[INFO] [stdout] 18 +                             if let Ok(matched_file) = &file {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Result`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lib.rs:18:49
[INFO] [stdout]    |
[INFO] [stdout] 18 | ...                   for matched_file in &file {
[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] 18 -                             for matched_file in &file {
[INFO] [stdout] 18 +                             while let Ok(matched_file) = &file {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 18 -                             for matched_file in &file {
[INFO] [stdout] 18 +                             if let Ok(matched_file) = &file {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Result`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lib.rs:18:49
[INFO] [stdout]    |
[INFO] [stdout] 18 | ...                   for matched_file in &file {
[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] 18 -                             for matched_file in &file {
[INFO] [stdout] 18 +                             while let Ok(matched_file) = &file {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 18 -                             for matched_file in &file {
[INFO] [stdout] 18 +                             if let Ok(matched_file) = &file {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Result`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lib.rs:18:49
[INFO] [stdout]    |
[INFO] [stdout] 18 | ...                   for matched_file in &file {
[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] 18 -                             for matched_file in &file {
[INFO] [stdout] 18 +                             while let Ok(matched_file) = &file {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 18 -                             for matched_file in &file {
[INFO] [stdout] 18 +                             if let Ok(matched_file) = &file {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `Command { std: "docker" "inspect" "79e6852c5541fefc3c8c88f70839b6cf7c0cbb0ec9d4963d01a15b6d8ca08586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79e6852c5541fefc3c8c88f70839b6cf7c0cbb0ec9d4963d01a15b6d8ca08586", kill_on_drop: false }`
[INFO] [stdout] 79e6852c5541fefc3c8c88f70839b6cf7c0cbb0ec9d4963d01a15b6d8ca08586