[INFO] fetching crate interactors 0.0.3...
[INFO] checking interactors-0.0.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate interactors 0.0.3 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate interactors 0.0.3
[INFO] finished tweaking crates.io crate interactors 0.0.3
[INFO] tweaked toml for crates.io crate interactors 0.0.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate interactors 0.0.3 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 interactors 0.0.3 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] 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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20940f894f64e404eedefd6f0ce6753415b4e82b7b2f0831323cd2da0f6277d4
[INFO] running `Command { std: "docker" "start" "-a" "20940f894f64e404eedefd6f0ce6753415b4e82b7b2f0831323cd2da0f6277d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20940f894f64e404eedefd6f0ce6753415b4e82b7b2f0831323cd2da0f6277d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20940f894f64e404eedefd6f0ce6753415b4e82b7b2f0831323cd2da0f6277d4", kill_on_drop: false }`
[INFO] [stdout] 20940f894f64e404eedefd6f0ce6753415b4e82b7b2f0831323cd2da0f6277d4
[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 -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] be4c62cf9e4f3272c9be652586e4490c2acc88d84245517a8e285c2b58ec9140
[INFO] running `Command { std: "docker" "start" "-a" "be4c62cf9e4f3272c9be652586e4490c2acc88d84245517a8e285c2b58ec9140", kill_on_drop: false }`
[INFO] [stderr]     Checking interactors v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:26:60
[INFO] [stdout]    |
[INFO] [stdout] 26 |       fn execute(&self) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]    |  ____________________________________________________________^
[INFO] [stdout] 27 | |         Ok(self.left + self.right)
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         Ok(self.left + self.right)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:47:60
[INFO] [stdout]    |
[INFO] [stdout] 47 |       fn execute(&self) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]    |  ____________________________________________________________^
[INFO] [stdout] 48 | |         Ok(self.left * self.right)
[INFO] [stdout] 49 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         Ok(self.left * self.right)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:26:60
[INFO] [stdout]    |
[INFO] [stdout] 26 |       fn execute(&self) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]    |  ____________________________________________________________^
[INFO] [stdout] 27 | |         Ok(self.left + self.right)
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         Ok(self.left + self.right)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:47:60
[INFO] [stdout]    |
[INFO] [stdout] 47 |       fn execute(&self) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]    |  ____________________________________________________________^
[INFO] [stdout] 48 | |         Ok(self.left * self.right)
[INFO] [stdout] 49 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         Ok(self.left * self.right)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:68:22
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let result = cmd.execute().unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:75:22
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let result = cmd.execute().unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:82:22
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let result = CommandInvoker::invoke(add_cmd).unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/lib.rs:86:22
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let result = CommandInvoker::invoke(multiply_cmd).unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `interactors` (lib test) due to 8 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `interactors` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "be4c62cf9e4f3272c9be652586e4490c2acc88d84245517a8e285c2b58ec9140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be4c62cf9e4f3272c9be652586e4490c2acc88d84245517a8e285c2b58ec9140", kill_on_drop: false }`
[INFO] [stdout] be4c62cf9e4f3272c9be652586e4490c2acc88d84245517a8e285c2b58ec9140
