[INFO] cloning repository https://github.com/mekras/ptgrep [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mekras/ptgrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmekras%2Fptgrep", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmekras%2Fptgrep'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] bf3493082d30dc227348079ca118528c3141d298 [INFO] checking mekras/ptgrep against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmekras%2Fptgrep" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mekras/ptgrep on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/mekras/ptgrep [INFO] finished tweaking git repo https://github.com/mekras/ptgrep [INFO] tweaked toml for git repo https://github.com/mekras/ptgrep written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/mekras/ptgrep 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 1 package [INFO] [stderr] Updating ptgrep v1.0.0 (/workspace/builds/worker-7-tc1/source) -> v1.0.1 [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded lazy_static v1.1.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c9385981d79bd788214146227fc63e1b654755dbcc375fcadac8022591ba2ec7 [INFO] running `Command { std: "docker" "start" "-a" "c9385981d79bd788214146227fc63e1b654755dbcc375fcadac8022591ba2ec7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c9385981d79bd788214146227fc63e1b654755dbcc375fcadac8022591ba2ec7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c9385981d79bd788214146227fc63e1b654755dbcc375fcadac8022591ba2ec7", kill_on_drop: false }` [INFO] [stdout] c9385981d79bd788214146227fc63e1b654755dbcc375fcadac8022591ba2ec7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c7af2f1ea7784131cb70b6a1901e2cc7c3d1ae3037cd9511aacb09101a2e7336 [INFO] running `Command { std: "docker" "start" "-a" "c7af2f1ea7784131cb70b6a1901e2cc7c3d1ae3037cd9511aacb09101a2e7336", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.98 [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking winapi v0.2.8 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Compiling regex v1.0.6 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking utf8-ranges v1.0.4 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking yaml-rust v0.3.5 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking exitcode v1.1.2 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling lazy_static v1.1.1 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking thread-id v2.0.0 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking thread_local v0.2.7 [INFO] [stderr] Checking ptgrep v1.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `String` is imported redundantly [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::string::String; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `String` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `String` is imported redundantly [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::string::String; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `String` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:189:25 [INFO] [stdout] | [INFO] [stdout] 189 | for argument in arguments.values_of("lower") { [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] 189 | while let Some(argument) = arguments.values_of("lower") { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 189 | if let Some(argument) = arguments.values_of("lower") { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:195:25 [INFO] [stdout] | [INFO] [stdout] 195 | for argument in arguments.values_of("higher") { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 195 | while let Some(argument) = arguments.values_of("higher") { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 195 | if let Some(argument) = arguments.values_of("higher") { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:189:25 [INFO] [stdout] | [INFO] [stdout] 189 | for argument in arguments.values_of("lower") { [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] 189 | while let Some(argument) = arguments.values_of("lower") { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 189 | if let Some(argument) = arguments.values_of("lower") { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:195:25 [INFO] [stdout] | [INFO] [stdout] 195 | for argument in arguments.values_of("higher") { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 195 | while let Some(argument) = arguments.values_of("higher") { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 195 | if let Some(argument) = arguments.values_of("higher") { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.88s [INFO] running `Command { std: "docker" "inspect" "c7af2f1ea7784131cb70b6a1901e2cc7c3d1ae3037cd9511aacb09101a2e7336", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c7af2f1ea7784131cb70b6a1901e2cc7c3d1ae3037cd9511aacb09101a2e7336", kill_on_drop: false }` [INFO] [stdout] c7af2f1ea7784131cb70b6a1901e2cc7c3d1ae3037cd9511aacb09101a2e7336 [INFO] checking mekras/ptgrep against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmekras%2Fptgrep" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mekras/ptgrep on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/mekras/ptgrep [INFO] finished tweaking git repo https://github.com/mekras/ptgrep [INFO] tweaked toml for git repo https://github.com/mekras/ptgrep written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/mekras/ptgrep 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 39c275d6a2f8e98c26421d45b56f74ee2af961fb003ee2bc0cf9d26cba4ef40c [INFO] running `Command { std: "docker" "start" "-a" "39c275d6a2f8e98c26421d45b56f74ee2af961fb003ee2bc0cf9d26cba4ef40c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "39c275d6a2f8e98c26421d45b56f74ee2af961fb003ee2bc0cf9d26cba4ef40c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "39c275d6a2f8e98c26421d45b56f74ee2af961fb003ee2bc0cf9d26cba4ef40c", kill_on_drop: false }` [INFO] [stdout] 39c275d6a2f8e98c26421d45b56f74ee2af961fb003ee2bc0cf9d26cba4ef40c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 32bfaf657eda3c2fc55279dc3ade7177c2f453aca9c110da4f6f7288765f48f6 [INFO] running `Command { std: "docker" "start" "-a" "32bfaf657eda3c2fc55279dc3ade7177c2f453aca9c110da4f6f7288765f48f6", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.98 [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking winapi v0.2.8 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Compiling regex v1.0.6 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking utf8-ranges v1.0.4 [INFO] [stderr] Checking yaml-rust v0.3.5 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking exitcode v1.1.2 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Compiling lazy_static v1.1.1 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking thread-id v2.0.0 [INFO] [stderr] Checking thread_local v0.2.7 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking ptgrep v1.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `String` is imported redundantly [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::string::String; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `String` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `String` is imported redundantly [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::string::String; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `String` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:189:25 [INFO] [stdout] | [INFO] [stdout] 189 | for argument in arguments.values_of("lower") { [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] 189 | while let Some(argument) = arguments.values_of("lower") { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 189 | if let Some(argument) = arguments.values_of("lower") { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:195:25 [INFO] [stdout] | [INFO] [stdout] 195 | for argument in arguments.values_of("higher") { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 195 | while let Some(argument) = arguments.values_of("higher") { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 195 | if let Some(argument) = arguments.values_of("higher") { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:189:25 [INFO] [stdout] | [INFO] [stdout] 189 | for argument in arguments.values_of("lower") { [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] 189 | while let Some(argument) = arguments.values_of("lower") { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 189 | if let Some(argument) = arguments.values_of("lower") { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:195:25 [INFO] [stdout] | [INFO] [stdout] 195 | for argument in arguments.values_of("higher") { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 195 | while let Some(argument) = arguments.values_of("higher") { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 195 | if let Some(argument) = arguments.values_of("higher") { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.90s [INFO] running `Command { std: "docker" "inspect" "32bfaf657eda3c2fc55279dc3ade7177c2f453aca9c110da4f6f7288765f48f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "32bfaf657eda3c2fc55279dc3ade7177c2f453aca9c110da4f6f7288765f48f6", kill_on_drop: false }` [INFO] [stdout] 32bfaf657eda3c2fc55279dc3ade7177c2f453aca9c110da4f6f7288765f48f6