[INFO] fetching crate ancs 0.2.0...
[INFO] checking ancs-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ancs 0.2.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ancs 0.2.0
[INFO] finished tweaking crates.io crate ancs 0.2.0
[INFO] tweaked toml for crates.io crate ancs 0.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ancs 0.2.0 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] 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 3 packages to latest compatible versions
[INFO] [stderr]       Adding nom v7.1.3 (available: v8.0.0)
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b4051e4326b28ea2c8264eec6eec29a730f9b285d40678ae33d35832f738e979
[INFO] running `Command { std: "docker" "start" "-a" "b4051e4326b28ea2c8264eec6eec29a730f9b285d40678ae33d35832f738e979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4051e4326b28ea2c8264eec6eec29a730f9b285d40678ae33d35832f738e979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4051e4326b28ea2c8264eec6eec29a730f9b285d40678ae33d35832f738e979", kill_on_drop: false }`
[INFO] [stdout] b4051e4326b28ea2c8264eec6eec29a730f9b285d40678ae33d35832f738e979
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b98c72dba7b9ebdf0ea7fc44a02b7e0aea7bdc2c9e34446d0d9359020dda8d57
[INFO] running `Command { std: "docker" "start" "-a" "b98c72dba7b9ebdf0ea7fc44a02b7e0aea7bdc2c9e34446d0d9359020dda8d57", kill_on_drop: false }`
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking ancs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::attributes::notification::*`
[INFO] [stdout]  --> src/characteristics/control_point.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use crate::attributes::notification::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::attributes::notification::*`
[INFO] [stdout]  --> src/characteristics/control_point.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use crate::attributes::notification::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<NotificationAttributeID, Infallible>
[INFO] [stdout]    --> src/attributes.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 id: notification::NotificationAttributeID::try_from(id).unwrap(),
[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<AppAttributeID, Infallible>
[INFO] [stdout]    --> src/attributes.rs:206:21
[INFO] [stdout]     |
[INFO] [stdout] 206 |                 id: app::AppAttributeID::try_from(id).unwrap(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ancs` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<NotificationAttributeID, Infallible>
[INFO] [stdout]    --> src/attributes.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 id: notification::NotificationAttributeID::try_from(id).unwrap(),
[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<AppAttributeID, Infallible>
[INFO] [stdout]    --> src/attributes.rs:206:21
[INFO] [stdout]     |
[INFO] [stdout] 206 |                 id: app::AppAttributeID::try_from(id).unwrap(),
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ancs` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b98c72dba7b9ebdf0ea7fc44a02b7e0aea7bdc2c9e34446d0d9359020dda8d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b98c72dba7b9ebdf0ea7fc44a02b7e0aea7bdc2c9e34446d0d9359020dda8d57", kill_on_drop: false }`
[INFO] [stdout] b98c72dba7b9ebdf0ea7fc44a02b7e0aea7bdc2c9e34446d0d9359020dda8d57