[INFO] fetching crate qwal 0.1.0...
[INFO] checking qwal-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate qwal 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate qwal 0.1.0
[INFO] finished tweaking crates.io crate qwal 0.1.0
[INFO] tweaked toml for crates.io crate qwal 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate qwal 0.1.0 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 qwal 0.1.0 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] 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] 94aa2049fec1aebb9847658a6e5ae69b9afb852e9a513a3e01d6c14cb0d59dc9
[INFO] running `Command { std: "docker" "start" "-a" "94aa2049fec1aebb9847658a6e5ae69b9afb852e9a513a3e01d6c14cb0d59dc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94aa2049fec1aebb9847658a6e5ae69b9afb852e9a513a3e01d6c14cb0d59dc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94aa2049fec1aebb9847658a6e5ae69b9afb852e9a513a3e01d6c14cb0d59dc9", kill_on_drop: false }`
[INFO] [stdout] 94aa2049fec1aebb9847658a6e5ae69b9afb852e9a513a3e01d6c14cb0d59dc9
[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] 8a3e0acd1078d82716980b2d0ddf5b00f4b3313a5ed10872ebee29fc52dbcda0
[INFO] running `Command { std: "docker" "start" "-a" "8a3e0acd1078d82716980b2d0ddf5b00f4b3313a5ed10872ebee29fc52dbcda0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]     Checking fastrand v2.0.2
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking tempfile v3.10.1
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking qwal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:28:56
[INFO] [stdout]    |
[INFO] [stdout] 28 |       fn serialize(self) -> Result<Vec<u8>, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________^
[INFO] [stdout] 29 | |         Ok(self)
[INFO] [stdout] 30 | |     }
[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: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Ok(self)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:32:72
[INFO] [stdout]    |
[INFO] [stdout] 32 |       fn deserialize(data: Vec<u8>) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________________________^
[INFO] [stdout] 33 | |         Ok(data)
[INFO] [stdout] 34 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         Ok(data)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:40:56
[INFO] [stdout]    |
[INFO] [stdout] 40 |       fn serialize(self) -> Result<Vec<u8>, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________^
[INFO] [stdout] 41 | |         Ok(self.to_vec())
[INFO] [stdout] 42 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(self.to_vec())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:44:72
[INFO] [stdout]    |
[INFO] [stdout] 44 |       fn deserialize(data: Vec<u8>) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________________________^
[INFO] [stdout] 45 | |         Ok(data)
[INFO] [stdout] 46 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         Ok(data)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qwal` (lib) due to 8 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:28:56
[INFO] [stdout]    |
[INFO] [stdout] 28 |       fn serialize(self) -> Result<Vec<u8>, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________^
[INFO] [stdout] 29 | |         Ok(self)
[INFO] [stdout] 30 | |     }
[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: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Ok(self)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:32:72
[INFO] [stdout]    |
[INFO] [stdout] 32 |       fn deserialize(data: Vec<u8>) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________________________^
[INFO] [stdout] 33 | |         Ok(data)
[INFO] [stdout] 34 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         Ok(data)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:40:56
[INFO] [stdout]    |
[INFO] [stdout] 40 |       fn serialize(self) -> Result<Vec<u8>, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________^
[INFO] [stdout] 41 | |         Ok(self.to_vec())
[INFO] [stdout] 42 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(self.to_vec())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:44:72
[INFO] [stdout]    |
[INFO] [stdout] 44 |       fn deserialize(data: Vec<u8>) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________________________^
[INFO] [stdout] 45 | |         Ok(data)
[INFO] [stdout] 46 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Vec<u8>, Infallible>
[INFO] [stdout]   --> src/entry.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         Ok(data)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qwal` (lib test) due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "8a3e0acd1078d82716980b2d0ddf5b00f4b3313a5ed10872ebee29fc52dbcda0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a3e0acd1078d82716980b2d0ddf5b00f4b3313a5ed10872ebee29fc52dbcda0", kill_on_drop: false }`
[INFO] [stdout] 8a3e0acd1078d82716980b2d0ddf5b00f4b3313a5ed10872ebee29fc52dbcda0
