[INFO] fetching crate derive-visitor 0.4.0...
[INFO] testing derive-visitor-0.4.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate derive-visitor 0.4.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate derive-visitor 0.4.0
[INFO] finished tweaking crates.io crate derive-visitor 0.4.0
[INFO] tweaked toml for crates.io crate derive-visitor 0.4.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate derive-visitor 0.4.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive-visitor-macros v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1dc0b98380d8e637ce517848beedd31273627a8842ac306f0758a2a5767dadb
[INFO] running `Command { std: "docker" "start" "-a" "f1dc0b98380d8e637ce517848beedd31273627a8842ac306f0758a2a5767dadb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1dc0b98380d8e637ce517848beedd31273627a8842ac306f0758a2a5767dadb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1dc0b98380d8e637ce517848beedd31273627a8842ac306f0758a2a5767dadb", kill_on_drop: false }`
[INFO] [stdout] f1dc0b98380d8e637ce517848beedd31273627a8842ac306f0758a2a5767dadb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 931612dd1d52c475691144dcc4b1eabcab0e9aa8e184173ebc75a07849fd0d30
[INFO] running `Command { std: "docker" "start" "-a" "931612dd1d52c475691144dcc4b1eabcab0e9aa8e184173ebc75a07849fd0d30", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling derive-visitor-macros v0.4.0
[INFO] [stderr]    Compiling derive-visitor v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:572:1
[INFO] [stdout]     |
[INFO] [stdout] 572 | impl_drive_for_into_iterator! { Option<T> ; T }
[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] 544 -                 for item in self {
[INFO] [stdout] 544 +                 while let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 544 -                 for item in self {
[INFO] [stdout] 544 +                 if let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:572:1
[INFO] [stdout]     |
[INFO] [stdout] 572 | impl_drive_for_into_iterator! { Option<T> ; T }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 while let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 if let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.50s
[INFO] [stdout] warning: for loop over a `&Result`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:573:1
[INFO] [stdout]     |
[INFO] [stdout] 573 | impl_drive_for_into_iterator! { Result<T, U> ; T, U }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 544 -                 for item in self {
[INFO] [stdout] 544 +                 while let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 544 -                 for item in self {
[INFO] [stdout] 544 +                 if let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Result`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:573:1
[INFO] [stdout]     |
[INFO] [stdout] 573 | impl_drive_for_into_iterator! { Result<T, U> ; T, U }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 while let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 if let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "931612dd1d52c475691144dcc4b1eabcab0e9aa8e184173ebc75a07849fd0d30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "931612dd1d52c475691144dcc4b1eabcab0e9aa8e184173ebc75a07849fd0d30", kill_on_drop: false }`
[INFO] [stdout] 931612dd1d52c475691144dcc4b1eabcab0e9aa8e184173ebc75a07849fd0d30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c5ba3625b686424f6f90877749d08a0827bd3220136669519ad62a008cab90b
[INFO] running `Command { std: "docker" "start" "-a" "2c5ba3625b686424f6f90877749d08a0827bd3220136669519ad62a008cab90b", kill_on_drop: false }`
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:572:1
[INFO] [stdout]     |
[INFO] [stdout] 572 | impl_drive_for_into_iterator! { Option<T> ; T }
[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] 544 -                 for item in self {
[INFO] [stdout] 544 +                 while let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 544 -                 for item in self {
[INFO] [stdout] 544 +                 if let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:572:1
[INFO] [stdout]     |
[INFO] [stdout] 572 | impl_drive_for_into_iterator! { Option<T> ; T }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 while let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 if let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling derive-visitor v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Result`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:573:1
[INFO] [stdout]     |
[INFO] [stdout] 573 | impl_drive_for_into_iterator! { Result<T, U> ; T, U }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 544 -                 for item in self {
[INFO] [stdout] 544 +                 while let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 544 -                 for item in self {
[INFO] [stdout] 544 +                 if let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Result`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:573:1
[INFO] [stdout]     |
[INFO] [stdout] 573 | impl_drive_for_into_iterator! { Result<T, U> ; T, U }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 while let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 if let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:572:1
[INFO] [stdout]     |
[INFO] [stdout] 572 | impl_drive_for_into_iterator! { Option<T> ; T }
[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] 544 -                 for item in self {
[INFO] [stdout] 544 +                 while let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 544 -                 for item in self {
[INFO] [stdout] 544 +                 if let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:572:1
[INFO] [stdout]     |
[INFO] [stdout] 572 | impl_drive_for_into_iterator! { Option<T> ; T }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 while let Some() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 if let Some() =  in self {
[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:573:1
[INFO] [stdout]     |
[INFO] [stdout] 573 | impl_drive_for_into_iterator! { Result<T, U> ; T, U }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 544 -                 for item in self {
[INFO] [stdout] 544 +                 while let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 544 -                 for item in self {
[INFO] [stdout] 544 +                 if let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `&mut Result`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:573:1
[INFO] [stdout]     |
[INFO] [stdout] 573 | impl_drive_for_into_iterator! { Result<T, U> ; T, U }
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 while let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 557 -                 for item in self {
[INFO] [stdout] 557 +                 if let Ok() =  in self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "2c5ba3625b686424f6f90877749d08a0827bd3220136669519ad62a008cab90b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c5ba3625b686424f6f90877749d08a0827bd3220136669519ad62a008cab90b", kill_on_drop: false }`
[INFO] [stdout] 2c5ba3625b686424f6f90877749d08a0827bd3220136669519ad62a008cab90b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7841172ce2dd11eb28fcb90bbe5964e402ccbf660e9145c4063fd4143e5cb20b
[INFO] running `Command { std: "docker" "start" "-a" "7841172ce2dd11eb28fcb90bbe5964e402ccbf660e9145c4063fd4143e5cb20b", kill_on_drop: false }`
[INFO] [stderr] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stderr]    --> src/lib.rs:572:1
[INFO] [stderr]     |
[INFO] [stderr] 572 | impl_drive_for_into_iterator! { Option<T> ; T }
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]     |
[INFO] [stderr] 544 -                 for item in self {
[INFO] [stderr] 544 +                 while let Some() =  in self {
[INFO] [stderr]     |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]     |
[INFO] [stderr] 544 -                 for item in self {
[INFO] [stderr] 544 +                 if let Some() =  in self {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: for loop over a `&mut Option`. This is more readably written as an `if let` statement
[INFO] [stderr]    --> src/lib.rs:572:1
[INFO] [stderr]     |
[INFO] [stderr] 572 | impl_drive_for_into_iterator! { Option<T> ; T }
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]     |
[INFO] [stderr] 557 -                 for item in self {
[INFO] [stderr] 557 +                 while let Some() =  in self {
[INFO] [stderr]     |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]     |
[INFO] [stderr] 557 -                 for item in self {
[INFO] [stderr] 557 +                 if let Some() =  in self {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: for loop over a `&Result`. This is more readably written as an `if let` statement
[INFO] [stderr]    --> src/lib.rs:573:1
[INFO] [stderr]     |
[INFO] [stderr] 573 | impl_drive_for_into_iterator! { Result<T, U> ; T, U }
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]     |
[INFO] [stderr] 544 -                 for item in self {
[INFO] [stderr] 544 +                 while let Ok() =  in self {
[INFO] [stderr]     |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]     |
[INFO] [stderr] 544 -                 for item in self {
[INFO] [stderr] 544 +                 if let Ok() =  in self {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: for loop over a `&mut Result`. This is more readably written as an `if let` statement
[INFO] [stderr]    --> src/lib.rs:573:1
[INFO] [stderr]     |
[INFO] [stderr] 573 | impl_drive_for_into_iterator! { Result<T, U> ; T, U }
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]     |
[INFO] [stderr] 557 -                 for item in self {
[INFO] [stderr] 557 +                 while let Ok() =  in self {
[INFO] [stderr]     |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]     |
[INFO] [stderr] 557 -                 for item in self {
[INFO] [stderr] 557 +                 if let Ok() =  in self {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `derive-visitor` (lib) generated 4 warnings
[INFO] [stderr] warning: `derive-visitor` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/derive_visitor-3e81d559e1f6c7ae)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_containers.rs (/opt/rustwide/target/debug/deps/test_containers-4feb1fd2c4073aad)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_containers_mut ... ok
[INFO] [stdout] test test_containers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_std_types.rs (/opt/rustwide/target/debug/deps/test_std_types-85add7abe10505b0)
[INFO] [stderr]      Running tests/test_visitor_mut.rs (/opt/rustwide/target/debug/deps/test_visitor_mut-e834807f228ae45e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests derive_visitor
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test src/lib.rs - Drive (line 368) ... ignored
[INFO] [stdout] test src/lib.rs - Drive (line 394) ... ignored
[INFO] [stdout] test src/lib.rs - Drive (line 446) ... ignored
[INFO] [stdout] test src/lib.rs - Visitor (line 159) ... ignored
[INFO] [stdout] test src/lib.rs - Visitor (line 186) ... ignored
[INFO] [stdout] test src/lib.rs - Visitor (line 200) ... ignored
[INFO] [stdout] test src/lib.rs - Visitor (line 219) ... ignored
[INFO] [stdout] test src/lib.rs - visitor_fn_mut (line 290) ... ok
[INFO] [stdout] test src/lib.rs - DriveMut (line 470) ... ok
[INFO] [stdout] test src/lib.rs - visitor_fn (line 273) ... ok
[INFO] [stdout] test src/lib.rs - VisitorMut (line 249) ... ok
[INFO] [stdout] test src/lib.rs - (line 83) ... ok
[INFO] [stdout] test src/lib.rs - (line 17) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 7 ignored; 0 measured; 0 filtered out; finished in 0.81s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7841172ce2dd11eb28fcb90bbe5964e402ccbf660e9145c4063fd4143e5cb20b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7841172ce2dd11eb28fcb90bbe5964e402ccbf660e9145c4063fd4143e5cb20b", kill_on_drop: false }`
[INFO] [stdout] 7841172ce2dd11eb28fcb90bbe5964e402ccbf660e9145c4063fd4143e5cb20b