[INFO] fetching crate puffin 0.19.1...
[INFO] checking puffin-0.19.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate puffin 0.19.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate puffin 0.19.1
[INFO] finished tweaking crates.io crate puffin 0.19.1
[INFO] tweaked toml for crates.io crate puffin 0.19.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate puffin 0.19.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 91 packages to latest compatible versions
[INFO] [stderr]       Adding bincode v1.3.3 (available: v2.0.1)
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] [stderr]       Adding lz4_flex v0.11.5 (available: v0.12.0)
[INFO] [stderr]       Adding ruzstd v0.4.0 (available: v0.8.2)
[INFO] [stderr]       Adding web-time v0.2.4 (available: v1.1.0)
[INFO] [stderr]       Adding zstd v0.12.4 (available: v0.13.3)
[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-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] 0bc99831a7e3a50c1f6d4ee4cec26f82b2454f2739198889d3df07b458bc5b4c
[INFO] running `Command { std: "docker" "start" "-a" "0bc99831a7e3a50c1f6d4ee4cec26f82b2454f2739198889d3df07b458bc5b4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bc99831a7e3a50c1f6d4ee4cec26f82b2454f2739198889d3df07b458bc5b4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bc99831a7e3a50c1f6d4ee4cec26f82b2454f2739198889d3df07b458bc5b4c", kill_on_drop: false }`
[INFO] [stdout] 0bc99831a7e3a50c1f6d4ee4cec26f82b2454f2739198889d3df07b458bc5b4c
[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] 64b50779c658b8e1abf79f8f71390526bbc741e02eee8c620872e13936a662d1
[INFO] running `Command { std: "docker" "start" "-a" "64b50779c658b8e1abf79f8f71390526bbc741e02eee8c620872e13936a662d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]     Checking puffin v0.19.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Arc<UnpackedFrameData>, Never>
[INFO] [stdout]    --> src/frame_data.rs:181:82
[INFO] [stdout]     |
[INFO] [stdout] 181 |       pub fn unpacked(&self) -> std::result::Result<Arc<UnpackedFrameData>, Never> {
[INFO] [stdout]     |  __________________________________________________________________________________^
[INFO] [stdout] 182 | |         Ok(self.unpacked_frame.clone())
[INFO] [stdout] 183 | |     }
[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<Arc<UnpackedFrameData>, Never>
[INFO] [stdout]    --> src/frame_data.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |         Ok(self.unpacked_frame.clone())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `puffin` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "64b50779c658b8e1abf79f8f71390526bbc741e02eee8c620872e13936a662d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64b50779c658b8e1abf79f8f71390526bbc741e02eee8c620872e13936a662d1", kill_on_drop: false }`
[INFO] [stdout] 64b50779c658b8e1abf79f8f71390526bbc741e02eee8c620872e13936a662d1