[INFO] fetching crate cfg-match 0.2.1...
[INFO] checking cfg-match-0.2.1 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate cfg-match 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate cfg-match 0.2.1 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cfg-match 0.2.1
[INFO] finished tweaking crates.io crate cfg-match 0.2.1
[INFO] tweaked toml for crates.io crate cfg-match 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56b70fd21dc01e8f690e80a18c4770929fac227c42b84be7abaa9b227bfd37a4
[INFO] running `Command { std: "docker" "start" "-a" "56b70fd21dc01e8f690e80a18c4770929fac227c42b84be7abaa9b227bfd37a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56b70fd21dc01e8f690e80a18c4770929fac227c42b84be7abaa9b227bfd37a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56b70fd21dc01e8f690e80a18c4770929fac227c42b84be7abaa9b227bfd37a4", kill_on_drop: false }`
[INFO] [stdout] 56b70fd21dc01e8f690e80a18c4770929fac227c42b84be7abaa9b227bfd37a4
[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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3798b95408a89a5edeedda8ee057893f5a14c88f54a4e820a893c44423cc9f9c
[INFO] running `Command { std: "docker" "start" "-a" "3798b95408a89a5edeedda8ee057893f5a14c88f54a4e820a893c44423cc9f9c", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-match v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]  --> tests/smoke.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | cfg_match! {
[INFO] [stdout]   | ^^^^^^^^^ ambiguous name
[INFO] [stdout]   |
[INFO] [stdout]   = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]   = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]  --> tests/smoke.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use cfg_match::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]   = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]   --> tests/smoke.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | cfg_match! {
[INFO] [stdout]    | ^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]    = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]   --> tests/smoke.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use cfg_match::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]    = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]   --> tests/smoke.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let f = cfg_match! {
[INFO] [stdout]    |             ^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]    = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]   --> tests/smoke.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use cfg_match::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]    = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]   --> tests/smoke.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let f = cfg_match! {
[INFO] [stdout]    |             ^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]    = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]   --> tests/smoke.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use cfg_match::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]    = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]   --> tests/smoke.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | cfg_match! {
[INFO] [stdout]    | ^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]    = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]   --> tests/smoke.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use cfg_match::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]    = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> tests/smoke.rs:32:11
[INFO] [stdout]    |
[INFO] [stdout] 32 |         test => ({
[INFO] [stdout]    |                 ^
[INFO] [stdout] ...
[INFO] [stdout] 35 |         }),
[INFO] [stdout]    |          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 32 ~         test => {
[INFO] [stdout] 33 |             println!("whee");
[INFO] [stdout] 34 |             true
[INFO] [stdout] 35 ~         },
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> tests/smoke.rs:45:11
[INFO] [stdout]    |
[INFO] [stdout] 45 |         test => ({
[INFO] [stdout]    |                 ^
[INFO] [stdout] ...
[INFO] [stdout] 48 |         }),
[INFO] [stdout]    |          ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 45 ~         test => {
[INFO] [stdout] 46 |             println!("whee");
[INFO] [stdout] 47 |             true
[INFO] [stdout] 48 ~         },
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0659`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cfg-match` (test "smoke") due to 6 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3798b95408a89a5edeedda8ee057893f5a14c88f54a4e820a893c44423cc9f9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3798b95408a89a5edeedda8ee057893f5a14c88f54a4e820a893c44423cc9f9c", kill_on_drop: false }`
[INFO] [stdout] 3798b95408a89a5edeedda8ee057893f5a14c88f54a4e820a893c44423cc9f9c
[INFO] checking cfg-match-0.2.1 against try#72eda894eb3548c7ba774079ce0afab42958d4ee for pr-121848-1
[INFO] extracting crate cfg-match 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate cfg-match 0.2.1 on toolchain 72eda894eb3548c7ba774079ce0afab42958d4ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cfg-match 0.2.1
[INFO] finished tweaking crates.io crate cfg-match 0.2.1
[INFO] tweaked toml for crates.io crate cfg-match 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c98ea0245e359114ff439ebbe24c1c2b7d1ce9262b71b34eff59e4a8b20e823a
[INFO] running `Command { std: "docker" "start" "-a" "c98ea0245e359114ff439ebbe24c1c2b7d1ce9262b71b34eff59e4a8b20e823a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c98ea0245e359114ff439ebbe24c1c2b7d1ce9262b71b34eff59e4a8b20e823a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c98ea0245e359114ff439ebbe24c1c2b7d1ce9262b71b34eff59e4a8b20e823a", kill_on_drop: false }`
[INFO] [stdout] c98ea0245e359114ff439ebbe24c1c2b7d1ce9262b71b34eff59e4a8b20e823a
[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" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a5f3cdf0e50bd2c4ee7a86a745e5f6934ad755e83540b51726937b41305c448
[INFO] running `Command { std: "docker" "start" "-a" "7a5f3cdf0e50bd2c4ee7a86a745e5f6934ad755e83540b51726937b41305c448", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-match v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]  --> tests/smoke.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | cfg_match! {
[INFO] [stdout]   | ^^^^^^^^^ ambiguous name
[INFO] [stdout]   |
[INFO] [stdout]   = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]   = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]  --> tests/smoke.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use cfg_match::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]   = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]   --> tests/smoke.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | cfg_match! {
[INFO] [stdout]    | ^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]    = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]   --> tests/smoke.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use cfg_match::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]    = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]   --> tests/smoke.rs:30:10
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let f = cfg_match! {
[INFO] [stdout]    |             ^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]    = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]   --> tests/smoke.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use cfg_match::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]    = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]   --> tests/smoke.rs:43:10
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let f = cfg_match! {
[INFO] [stdout]    |             ^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]    = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]   --> tests/smoke.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use cfg_match::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]    = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `cfg_match` is ambiguous
[INFO] [stdout]   --> tests/smoke.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | cfg_match! {
[INFO] [stdout]    | ^^^^^^^^^ ambiguous name
[INFO] [stdout]    |
[INFO] [stdout]    = note: ambiguous because of a conflict between a name from a glob import and an outer scope during import or macro resolution
[INFO] [stdout]    = note: `cfg_match` could refer to a macro from prelude
[INFO] [stdout] note: `cfg_match` could also refer to the macro imported here
[INFO] [stdout]   --> tests/smoke.rs:1:5
[INFO] [stdout]    |
[INFO] [stdout] 1  | use cfg_match::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    = help: consider adding an explicit import of `cfg_match` to disambiguate
[INFO] [stdout]    = help: or use `crate::cfg_match` to refer to this macro unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> tests/smoke.rs:32:11
[INFO] [stdout]    |
[INFO] [stdout] 32 |         test => ({
[INFO] [stdout]    |                 ^
[INFO] [stdout] ...
[INFO] [stdout] 35 |         }),
[INFO] [stdout]    |          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 32 ~         test => {
[INFO] [stdout] 33 |             println!("whee");
[INFO] [stdout] 34 |             true
[INFO] [stdout] 35 ~         },
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]   --> tests/smoke.rs:45:11
[INFO] [stdout]    |
[INFO] [stdout] 45 |         test => ({
[INFO] [stdout]    |                 ^
[INFO] [stdout] ...
[INFO] [stdout] 48 |         }),
[INFO] [stdout]    |          ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 45 ~         test => {
[INFO] [stdout] 46 |             println!("whee");
[INFO] [stdout] 47 |             true
[INFO] [stdout] 48 ~         },
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0659`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cfg-match` (test "smoke") due to 6 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7a5f3cdf0e50bd2c4ee7a86a745e5f6934ad755e83540b51726937b41305c448", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a5f3cdf0e50bd2c4ee7a86a745e5f6934ad755e83540b51726937b41305c448", kill_on_drop: false }`
[INFO] [stdout] 7a5f3cdf0e50bd2c4ee7a86a745e5f6934ad755e83540b51726937b41305c448
