[INFO] fetching crate bmart-derive 0.1.4...
[INFO] checking bmart-derive-0.1.4 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate bmart-derive 0.1.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate bmart-derive 0.1.4
[INFO] finished tweaking crates.io crate bmart-derive 0.1.4
[INFO] tweaked toml for crates.io crate bmart-derive 0.1.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bmart-derive 0.1.4 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.110)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 431334d75a80f8c0a59eb83bfa8137e0a8b507c4ccd8681c0c46dc80122d50c9
[INFO] running `Command { std: "docker" "start" "-a" "431334d75a80f8c0a59eb83bfa8137e0a8b507c4ccd8681c0c46dc80122d50c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "431334d75a80f8c0a59eb83bfa8137e0a8b507c4ccd8681c0c46dc80122d50c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "431334d75a80f8c0a59eb83bfa8137e0a8b507c4ccd8681c0c46dc80122d50c9", kill_on_drop: false }`
[INFO] [stdout] 431334d75a80f8c0a59eb83bfa8137e0a8b507c4ccd8681c0c46dc80122d50c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bd1a7a10953498e9f12333b56bab8122eeb0f4edc7a77557a7514cf7d69d49a9
[INFO] running `Command { std: "docker" "start" "-a" "bd1a7a10953498e9f12333b56bab8122eeb0f4edc7a77557a7514cf7d69d49a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]     Checking unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking bmart-derive v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Case, Infallible>
[INFO] [stdout]    --> src/lib.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________^
[INFO] [stdout] 119 | |         Ok(match s {
[INFO] [stdout] 120 | |             "lowercase" => Case::Lower,
[INFO] [stdout] 121 | |             "UPPERCASE" => Case::Upper,
[INFO] [stdout] ...   |
[INFO] [stdout] 128 | |         })
[INFO] [stdout] 129 | |     }
[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<Case, Infallible>
[INFO] [stdout]    --> src/lib.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 | /         Ok(match s {
[INFO] [stdout] 120 | |             "lowercase" => Case::Lower,
[INFO] [stdout] 121 | |             "UPPERCASE" => Case::Upper,
[INFO] [stdout] 122 | |             "snake_case" => Case::Snake,
[INFO] [stdout] ...   |
[INFO] [stdout] 127 | |             _ => panic!("unsupported case: {}", s),
[INFO] [stdout] 128 | |         })
[INFO] [stdout]     | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Case, Infallible>
[INFO] [stdout]    --> src/lib.rs:246:28
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     case = litstr!(nameval.lit).parse().unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Case, Infallible>
[INFO] [stdout]    --> src/lib.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________^
[INFO] [stdout] 119 | |         Ok(match s {
[INFO] [stdout] 120 | |             "lowercase" => Case::Lower,
[INFO] [stdout] 121 | |             "UPPERCASE" => Case::Upper,
[INFO] [stdout] ...   |
[INFO] [stdout] 128 | |         })
[INFO] [stdout] 129 | |     }
[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<Case, Infallible>
[INFO] [stdout]    --> src/lib.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 | /         Ok(match s {
[INFO] [stdout] 120 | |             "lowercase" => Case::Lower,
[INFO] [stdout] 121 | |             "UPPERCASE" => Case::Upper,
[INFO] [stdout] 122 | |             "snake_case" => Case::Snake,
[INFO] [stdout] ...   |
[INFO] [stdout] 127 | |             _ => panic!("unsupported case: {}", s),
[INFO] [stdout] 128 | |         })
[INFO] [stdout]     | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Case, Infallible>
[INFO] [stdout]    --> src/lib.rs:246:28
[INFO] [stdout]     |
[INFO] [stdout] 246 |                     case = litstr!(nameval.lit).parse().unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bmart-derive` (lib test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `bmart-derive` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "bd1a7a10953498e9f12333b56bab8122eeb0f4edc7a77557a7514cf7d69d49a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd1a7a10953498e9f12333b56bab8122eeb0f4edc7a77557a7514cf7d69d49a9", kill_on_drop: false }`
[INFO] [stdout] bd1a7a10953498e9f12333b56bab8122eeb0f4edc7a77557a7514cf7d69d49a9
