[INFO] cloning repository https://github.com/samuwen/re_flog
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samuwen/re_flog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuwen%2Fre_flog", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuwen%2Fre_flog'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6698709239e7d2607609f7087697a3c837d73d7
[INFO] checking samuwen/re_flog against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuwen%2Fre_flog" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/samuwen/re_flog
[INFO] finished tweaking git repo https://github.com/samuwen/re_flog
[INFO] tweaked toml for git repo https://github.com/samuwen/re_flog written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/samuwen/re_flog on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/samuwen/re_flog 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_threads v0.1.3
[INFO] [stderr]   Downloaded derive-getters v0.2.0
[INFO] [stderr]   Downloaded time-macros v0.2.3
[INFO] [stderr]   Downloaded clap_derive v3.1.0
[INFO] [stderr]   Downloaded clap v3.1.0
[INFO] [stderr]   Downloaded time v0.3.7
[INFO] [stderr]   Downloaded flexi_logger v0.22.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef66b295cf63ea55ce6b148490db97af5daa8abb99d87a9325dfdb280b69bf50
[INFO] running `Command { std: "docker" "start" "-a" "ef66b295cf63ea55ce6b148490db97af5daa8abb99d87a9325dfdb280b69bf50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef66b295cf63ea55ce6b148490db97af5daa8abb99d87a9325dfdb280b69bf50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef66b295cf63ea55ce6b148490db97af5daa8abb99d87a9325dfdb280b69bf50", kill_on_drop: false }`
[INFO] [stdout] ef66b295cf63ea55ce6b148490db97af5daa8abb99d87a9325dfdb280b69bf50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c67edafc8dfb679c68bc0b15dfc4f3142965cd1bc36e7c0940ef06644a8c90c
[INFO] running `Command { std: "docker" "start" "-a" "6c67edafc8dfb679c68bc0b15dfc4f3142965cd1bc36e7c0940ef06644a8c90c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling time-macros v0.2.3
[INFO] [stderr]     Checking num_threads v0.1.3
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking sha-1 v0.10.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking time v0.3.7
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling clap_derive v3.1.0
[INFO] [stderr]    Compiling derive-getters v0.2.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking flexi_logger v0.22.3
[INFO] [stderr]     Checking clap v3.1.0
[INFO] [stderr]     Checking re_flog v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `Result`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/structures/sha.rs:100:34
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 for dir_entry in read_dir(path) {
[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] 100 -                 for dir_entry in read_dir(path) {
[INFO] [stdout] 100 +                 while let Ok(dir_entry) = read_dir(path) {
[INFO] [stdout]     |
[INFO] [stdout] help: consider unwrapping the `Result` with `?` to iterate over its contents
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 for dir_entry in read_dir(path)? {
[INFO] [stdout]     |                                                +
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 100 -                 for dir_entry in read_dir(path) {
[INFO] [stdout] 100 +                 if let Ok(dir_entry) = read_dir(path) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/structures/index.rs:532:13
[INFO] [stdout]     |
[INFO] [stdout] 532 |         let f = IndexFile::from_disk().unwrap();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/commands/write_tree.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         write_tree(false);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let _ = write_tree(false);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/structures/git_objects.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |         read_from_disk(sha);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let _ = read_from_disk(sha);
[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/structures/sha.rs:100:34
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 for dir_entry in read_dir(path) {
[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] 100 -                 for dir_entry in read_dir(path) {
[INFO] [stdout] 100 +                 while let Ok(dir_entry) = read_dir(path) {
[INFO] [stdout]     |
[INFO] [stdout] help: consider unwrapping the `Result` with `?` to iterate over its contents
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 for dir_entry in read_dir(path)? {
[INFO] [stdout]     |                                                +
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 100 -                 for dir_entry in read_dir(path) {
[INFO] [stdout] 100 +                 if let Ok(dir_entry) = read_dir(path) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.75s
[INFO] running `Command { std: "docker" "inspect" "6c67edafc8dfb679c68bc0b15dfc4f3142965cd1bc36e7c0940ef06644a8c90c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c67edafc8dfb679c68bc0b15dfc4f3142965cd1bc36e7c0940ef06644a8c90c", kill_on_drop: false }`
[INFO] [stdout] 6c67edafc8dfb679c68bc0b15dfc4f3142965cd1bc36e7c0940ef06644a8c90c