[INFO] fetching crate lambda-extension 0.12.2...
[INFO] checking lambda-extension-0.12.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate lambda-extension 0.12.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate lambda-extension 0.12.2
[INFO] finished tweaking crates.io crate lambda-extension 0.12.2
[INFO] tweaked toml for crates.io crate lambda-extension 0.12.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lambda-extension 0.12.2 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 lambda-extension 0.12.2 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] 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] 1dd32a37f86807dd2cc05f5ac6061f371d253598b58aa6b191fbfe950254ce96
[INFO] running `Command { std: "docker" "start" "-a" "1dd32a37f86807dd2cc05f5ac6061f371d253598b58aa6b191fbfe950254ce96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1dd32a37f86807dd2cc05f5ac6061f371d253598b58aa6b191fbfe950254ce96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dd32a37f86807dd2cc05f5ac6061f371d253598b58aa6b191fbfe950254ce96", kill_on_drop: false }`
[INFO] [stdout] 1dd32a37f86807dd2cc05f5ac6061f371d253598b58aa6b191fbfe950254ce96
[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] c20eecd884a2050e748a6944fc2809b60fd2f0b77f612e45867788ca28c17103
[INFO] running `Command { std: "docker" "start" "-a" "c20eecd884a2050e748a6944fc2809b60fd2f0b77f612e45867788ca28c17103", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]     Checking http v1.3.1
[INFO] [stderr]     Checking tracing-core v0.1.33
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking smallvec v1.15.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking sync_wrapper v1.0.2
[INFO] [stderr]     Checking tower-layer v0.3.3
[INFO] [stderr]     Checking iana-time-zone v0.1.63
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking http-body-util v0.1.3
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking socket2 v0.5.9
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling async-stream-impl v0.3.6
[INFO] [stderr]     Checking tokio v1.46.0
[INFO] [stderr]     Checking async-stream v0.3.6
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking hyper v1.6.0
[INFO] [stderr]     Checking tower v0.5.2
[INFO] [stderr]     Checking tokio-stream v0.1.17
[INFO] [stderr]     Checking hyper-util v0.1.11
[INFO] [stderr]     Checking tracing-serde v0.2.0
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]     Checking lambda_runtime_api_client v0.12.3
[INFO] [stderr]     Checking lambda-extension v0.12.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<extension::Identity<T>, Infallible>
[INFO] [stdout]    --> src/extension.rs:485:24
[INFO] [stdout]     |
[INFO] [stdout] 485 |         Box::pin(ready(Ok(Identity::new())))
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lambda-extension` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<extension::Identity<T>, Infallible>
[INFO] [stdout]    --> src/extension.rs:485:24
[INFO] [stdout]     |
[INFO] [stdout] 485 |         Box::pin(ready(Ok(Identity::new())))
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lambda-extension` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c20eecd884a2050e748a6944fc2809b60fd2f0b77f612e45867788ca28c17103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c20eecd884a2050e748a6944fc2809b60fd2f0b77f612e45867788ca28c17103", kill_on_drop: false }`
[INFO] [stdout] c20eecd884a2050e748a6944fc2809b60fd2f0b77f612e45867788ca28c17103
