[INFO] fetching crate rrpack-basis 0.41.0...
[INFO] checking rrpack-basis-0.41.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rrpack-basis 0.41.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rrpack-basis 0.41.0
[INFO] finished tweaking crates.io crate rrpack-basis 0.41.0
[INFO] tweaked toml for crates.io crate rrpack-basis 0.41.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rrpack-basis 0.41.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 171 packages to latest compatible versions
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.0.1)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[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] 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] c1d77efd95e18f5a6ffd5c94664696c941de4e824c8a9edd665835129bec84e5
[INFO] running `Command { std: "docker" "start" "-a" "c1d77efd95e18f5a6ffd5c94664696c941de4e824c8a9edd665835129bec84e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1d77efd95e18f5a6ffd5c94664696c941de4e824c8a9edd665835129bec84e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1d77efd95e18f5a6ffd5c94664696c941de4e824c8a9edd665835129bec84e5", kill_on_drop: false }`
[INFO] [stdout] c1d77efd95e18f5a6ffd5c94664696c941de4e824c8a9edd665835129bec84e5
[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] e06e6603a7e9dbc5e8489f18be58fc61dae19386aae74888c048b1e199aa7dd4
[INFO] running `Command { std: "docker" "start" "-a" "e06e6603a7e9dbc5e8489f18be58fc61dae19386aae74888c048b1e199aa7dd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking tokio-util v0.7.17
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking meio-protocol v0.95.2
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking ordered-float v2.10.1
[INFO] [stderr]     Checking serde_qs v0.8.5
[INFO] [stderr]     Checking vectorize v0.2.0
[INFO] [stderr]     Checking metacrate v0.1.2
[INFO] [stderr]     Checking tokio-stream v0.1.17
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]    Compiling derive_more v0.99.20
[INFO] [stderr]     Checking h2 v0.3.27
[INFO] [stderr]     Checking tungstenite v0.14.0
[INFO] [stderr]     Checking tokio-tungstenite v0.15.0
[INFO] [stderr]     Checking meio v0.95.2
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling rill-derive v0.41.0
[INFO] [stderr]     Checking hyper v0.14.32
[INFO] [stderr]     Checking strum v0.21.0
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]     Checking num_enum v0.5.11
[INFO] [stderr]     Checking flexbuffers v2.0.0
[INFO] [stderr]     Checking rill-protocol v0.41.0
[INFO] [stderr]     Checking meio-connect v0.95.2
[INFO] [stderr]     Checking rill-engine v0.41.0
[INFO] [stderr]     Checking rrpack-basis v0.41.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `binder` is never read
[INFO] [stdout]   --> src/manifest/binder.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct BindedTracer<T: PackFlow> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     binder: Binder,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BindedTracer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<rill_protocol::io::provider::EntryId>, PathError>
[INFO] [stdout]   --> src/auto_path.rs:54:20
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let path = s.parse::<Path>().map(Vec::from);
[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<rill_protocol::io::provider::Path, PathError>
[INFO] [stdout]   --> src/auto_path.rs:54:20
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let path = s.parse::<Path>().map(Vec::from);
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<rill_protocol::io::provider::EntryId>, PathError>
[INFO] [stdout]   --> src/auto_path.rs:55:15
[INFO] [stdout]    |
[INFO] [stdout] 55 |         match path {
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<rill_protocol::io::provider::Path, PathError>
[INFO] [stdout]  --> src/manifest/layouts/state.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         "rillrate.manifest.layouts".parse().unwrap()
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<rill_protocol::io::provider::Path, PathError>
[INFO] [stdout]  --> src/manifest/paths/state.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         "rillrate.manifest.paths".parse().unwrap()
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `binder` is never read
[INFO] [stdout]   --> src/manifest/binder.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct BindedTracer<T: PackFlow> {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     binder: Binder,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BindedTracer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<rill_protocol::io::provider::EntryId>, PathError>
[INFO] [stdout]   --> src/auto_path.rs:54:20
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let path = s.parse::<Path>().map(Vec::from);
[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<rill_protocol::io::provider::Path, PathError>
[INFO] [stdout]   --> src/auto_path.rs:54:20
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let path = s.parse::<Path>().map(Vec::from);
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<rill_protocol::io::provider::EntryId>, PathError>
[INFO] [stdout]   --> src/auto_path.rs:55:15
[INFO] [stdout]    |
[INFO] [stdout] 55 |         match path {
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<rill_protocol::io::provider::Path, PathError>
[INFO] [stdout]  --> src/manifest/layouts/state.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         "rillrate.manifest.layouts".parse().unwrap()
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<rill_protocol::io::provider::Path, PathError>
[INFO] [stdout]  --> src/manifest/paths/state.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         "rillrate.manifest.paths".parse().unwrap()
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rrpack-basis` (lib test) due to 5 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rrpack-basis` (lib) due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "e06e6603a7e9dbc5e8489f18be58fc61dae19386aae74888c048b1e199aa7dd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e06e6603a7e9dbc5e8489f18be58fc61dae19386aae74888c048b1e199aa7dd4", kill_on_drop: false }`
[INFO] [stdout] e06e6603a7e9dbc5e8489f18be58fc61dae19386aae74888c048b1e199aa7dd4
