[INFO] fetching crate dg_xch_serialize 2.1.3...
[INFO] checking dg_xch_serialize-2.1.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate dg_xch_serialize 2.1.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate dg_xch_serialize 2.1.3
[INFO] finished tweaking crates.io crate dg_xch_serialize 2.1.3
[INFO] tweaked toml for crates.io crate dg_xch_serialize 2.1.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dg_xch_serialize 2.1.3 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 dg_xch_serialize 2.1.3 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 5477d398314b4040e8d2654365cb45824caea8063d72eefbd59b867d743525e9
[INFO] running `Command { std: "docker" "start" "-a" "5477d398314b4040e8d2654365cb45824caea8063d72eefbd59b867d743525e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5477d398314b4040e8d2654365cb45824caea8063d72eefbd59b867d743525e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5477d398314b4040e8d2654365cb45824caea8063d72eefbd59b867d743525e9", kill_on_drop: false }`
[INFO] [stdout] 5477d398314b4040e8d2654365cb45824caea8063d72eefbd59b867d743525e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3acc6cca7be5b5b2d93eca18e1a5096410281139b0c55d870b72e2be6a25ec40
[INFO] running `Command { std: "docker" "start" "-a" "3acc6cca7be5b5b2d93eca18e1a5096410281139b0c55d870b72e2be6a25ec40", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]     Checking deranged v0.4.1
[INFO] [stderr]     Checking time v0.3.41
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.95
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking dg_xch_serialize v2.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<ChiaProtocolVersion, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:53
[INFO] [stdout]    |
[INFO] [stdout] 41 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 42 | |         Ok(match s {
[INFO] [stdout] 43 | |             "0.0.34" => ChiaProtocolVersion::Chia0_0_34,
[INFO] [stdout] 44 | |             "0.0.35" => ChiaProtocolVersion::Chia0_0_35,
[INFO] [stdout] ...  |
[INFO] [stdout] 54 | |         })
[INFO] [stdout] 55 | |     }
[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<ChiaProtocolVersion, Infallible>
[INFO] [stdout]   --> src/lib.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | /         Ok(match s {
[INFO] [stdout] 43 | |             "0.0.34" => ChiaProtocolVersion::Chia0_0_34,
[INFO] [stdout] 44 | |             "0.0.35" => ChiaProtocolVersion::Chia0_0_35,
[INFO] [stdout] 45 | |             "0.0.36" => ChiaProtocolVersion::Chia0_0_36,
[INFO] [stdout] ...  |
[INFO] [stdout] 54 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ChiaProtocolVersion, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:53
[INFO] [stdout]    |
[INFO] [stdout] 41 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 42 | |         Ok(match s {
[INFO] [stdout] 43 | |             "0.0.34" => ChiaProtocolVersion::Chia0_0_34,
[INFO] [stdout] 44 | |             "0.0.35" => ChiaProtocolVersion::Chia0_0_35,
[INFO] [stdout] ...  |
[INFO] [stdout] 54 | |         })
[INFO] [stdout] 55 | |     }
[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<ChiaProtocolVersion, Infallible>
[INFO] [stdout]   --> src/lib.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | /         Ok(match s {
[INFO] [stdout] 43 | |             "0.0.34" => ChiaProtocolVersion::Chia0_0_34,
[INFO] [stdout] 44 | |             "0.0.35" => ChiaProtocolVersion::Chia0_0_35,
[INFO] [stdout] 45 | |             "0.0.36" => ChiaProtocolVersion::Chia0_0_36,
[INFO] [stdout] ...  |
[INFO] [stdout] 54 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dg_xch_serialize` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `dg_xch_serialize` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3acc6cca7be5b5b2d93eca18e1a5096410281139b0c55d870b72e2be6a25ec40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3acc6cca7be5b5b2d93eca18e1a5096410281139b0c55d870b72e2be6a25ec40", kill_on_drop: false }`
[INFO] [stdout] 3acc6cca7be5b5b2d93eca18e1a5096410281139b0c55d870b72e2be6a25ec40
