[INFO] fetching crate sarge 8.0.0...
[INFO] checking sarge-8.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate sarge 8.0.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate sarge 8.0.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate sarge 8.0.0
[INFO] tweaked toml for crates.io crate sarge 8.0.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sarge 8.0.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sarge 8.0.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2e54dc263b44fdf37e34e5cbd1e268874aef9e54df594323007093140bbba17
[INFO] running `Command { std: "docker" "start" "-a" "d2e54dc263b44fdf37e34e5cbd1e268874aef9e54df594323007093140bbba17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2e54dc263b44fdf37e34e5cbd1e268874aef9e54df594323007093140bbba17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2e54dc263b44fdf37e34e5cbd1e268874aef9e54df594323007093140bbba17", kill_on_drop: false }`
[INFO] [stdout] d2e54dc263b44fdf37e34e5cbd1e268874aef9e54df594323007093140bbba17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17dfb60bf4a20635894294f7587b95e816bcabfe0ea3f19d0db0bb9be4d6cea8
[INFO] running `Command { std: "docker" "start" "-a" "17dfb60bf4a20635894294f7587b95e816bcabfe0ea3f19d0db0bb9be4d6cea8", kill_on_drop: false }`
[INFO] [stderr]     Checking sarge v8.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/types.rs:57:31
[INFO] [stdout]    |
[INFO] [stdout] 57 |                   val.map(|val| val.parse())
[INFO] [stdout]    |                                 ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 | / impl_intrinsics! {
[INFO] [stdout] 71 | |     i8, ParseIntError;
[INFO] [stdout] 72 | |     i16, ParseIntError;
[INFO] [stdout] 73 | |     i32, ParseIntError;
[INFO] [stdout] ...  |
[INFO] [stdout] 85 | |     String, Infallible;
[INFO] [stdout] 86 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `impl_intrinsics` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/types.rs:94:14
[INFO] [stdout]    |
[INFO] [stdout] 94 |           Some(Ok(if let Some(val) = val {
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 95 | |             ["true", "1", "t"].contains(&val)
[INFO] [stdout] 96 | |         } else {
[INFO] [stdout] 97 | |             true
[INFO] [stdout] 98 | |         }))
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sarge` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/types.rs:57:31
[INFO] [stdout]    |
[INFO] [stdout] 57 |                   val.map(|val| val.parse())
[INFO] [stdout]    |                                 ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 | / impl_intrinsics! {
[INFO] [stdout] 71 | |     i8, ParseIntError;
[INFO] [stdout] 72 | |     i16, ParseIntError;
[INFO] [stdout] 73 | |     i32, ParseIntError;
[INFO] [stdout] ...  |
[INFO] [stdout] 85 | |     String, Infallible;
[INFO] [stdout] 86 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `impl_intrinsics` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/types.rs:94:14
[INFO] [stdout]    |
[INFO] [stdout] 94 |           Some(Ok(if let Some(val) = val {
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 95 | |             ["true", "1", "t"].contains(&val)
[INFO] [stdout] 96 | |         } else {
[INFO] [stdout] 97 | |             true
[INFO] [stdout] 98 | |         }))
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/test.rs:22:38
[INFO] [stdout]    |
[INFO] [stdout] 22 |     assert_eq!(name.get(&args), Some(Ok("Jonah".to_string())));
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/test.rs:23:38
[INFO] [stdout]    |
[INFO] [stdout] 23 |     assert_eq!(help.get(&args), Some(Ok(false)));
[INFO] [stdout]    |                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/test.rs:33:38
[INFO] [stdout]    |
[INFO] [stdout] 33 |     assert_eq!(help.get(&args), Some(Ok(true)));
[INFO] [stdout]    |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/test.rs:47:35
[INFO] [stdout]    |
[INFO] [stdout] 47 |     assert_eq!(a.get(&args), Some(Ok(true)));
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/test.rs:48:35
[INFO] [stdout]    |
[INFO] [stdout] 48 |     assert_eq!(b.get(&args), Some(Ok(true)));
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/test.rs:49:35
[INFO] [stdout]    |
[INFO] [stdout] 49 |     assert_eq!(c.get(&args), Some(Ok(true)));
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/test.rs:50:35
[INFO] [stdout]    |
[INFO] [stdout] 50 |     assert_eq!(d.get(&args), Some(Ok(false)));
[INFO] [stdout]    |                                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/test.rs:65:35
[INFO] [stdout]    |
[INFO] [stdout] 65 |     assert_eq!(a.get(&args), Some(Ok(true)));
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/test.rs:66:35
[INFO] [stdout]    |
[INFO] [stdout] 66 |     assert_eq!(b.get(&args), Some(Ok(true)));
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/test.rs:67:35
[INFO] [stdout]    |
[INFO] [stdout] 67 |     assert_eq!(c.get(&args), Some(Ok("test".to_string())));
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<String>, Infallible>
[INFO] [stdout]    --> src/test.rs:96:14
[INFO] [stdout]     |
[INFO] [stdout]  96 |           Some(Ok(vec![
[INFO] [stdout]     |  ______________^
[INFO] [stdout]  97 | |             "Hello".to_string(),
[INFO] [stdout]  98 | |             "World".to_string(),
[INFO] [stdout]  99 | |             "!".to_string(),
[INFO] [stdout] 100 | |         ]))
[INFO] [stdout]     | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/test.rs:127:37
[INFO] [stdout]     |
[INFO] [stdout] 127 |     assert_eq!(cfg.get(&args), Some(Ok("/cfg".to_string())));
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/test.rs:144:37
[INFO] [stdout]     |
[INFO] [stdout] 144 |     assert_eq!(cfg.get(&args), Some(Ok("/cfg".to_string())));
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]    --> src/test.rs:145:40
[INFO] [stdout]     |
[INFO] [stdout] 145 |     assert_eq!(silent.get(&args), Some(Ok(false)));
[INFO] [stdout]     |                                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<MyCustomType, Infallible>
[INFO] [stdout]   --> src/test/custom_type.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         Some(Ok(Self(val?.split(' ').map(|s| s.to_string()).collect())))
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<MyCustomType, Infallible>
[INFO] [stdout]   --> src/test/custom_type.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 |           Some(Ok(MyCustomType(vec![
[INFO] [stdout]    |  ______________^
[INFO] [stdout] 34 | |             "Hello".to_string(),
[INFO] [stdout] 35 | |             "World".to_string(),
[INFO] [stdout] 36 | |             "!".to_string(),
[INFO] [stdout] 37 | |         ])))
[INFO] [stdout]    | |___________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/macros.rs:17:21
[INFO] [stdout]    |
[INFO] [stdout] 17 |            let $name = $name
[INFO] [stdout]    |   _____________________^
[INFO] [stdout] 18 |  |             .get(&$args)
[INFO] [stdout] 19 |  |             .expect("Tried to unwrap argument that wasn't passed")
[INFO] [stdout]    |  |__________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/test/macros.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout]  3 | /  sarge! {
[INFO] [stdout]  4 | |      Args,
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |      #err sixth: u8 = 0,
[INFO] [stdout] 24 | |  }
[INFO] [stdout]    | |__- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/macros.rs:13:47
[INFO] [stdout]    |
[INFO] [stdout] 13 |           let $name = $name.get(&$args).map(|a| a.ok()).flatten();
[INFO] [stdout]    |                                                 ^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/test/macros.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout]  3 | / sarge! {
[INFO] [stdout]  4 | |     Args,
[INFO] [stdout] ...  |
[INFO] [stdout] 23 | |     #err sixth: u8 = 0,
[INFO] [stdout] 24 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__parse_arg` which comes from the expansion of the macro `sarge` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sarge` (lib test) due to 20 previous errors
[INFO] running `Command { std: "docker" "inspect" "17dfb60bf4a20635894294f7587b95e816bcabfe0ea3f19d0db0bb9be4d6cea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17dfb60bf4a20635894294f7587b95e816bcabfe0ea3f19d0db0bb9be4d6cea8", kill_on_drop: false }`
[INFO] [stdout] 17dfb60bf4a20635894294f7587b95e816bcabfe0ea3f19d0db0bb9be4d6cea8