[INFO] fetching crate libarc2 0.6.0...
[INFO] checking libarc2-0.6.0 against try#f93f9bd1edfdb032bbf1c02773329541b22aa5a7 for pr-150727-1
[INFO] extracting crate libarc2 0.6.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate libarc2 0.6.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate libarc2 0.6.0
[INFO] tweaked toml for crates.io crate libarc2 0.6.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate libarc2 0.6.0 on toolchain f93f9bd1edfdb032bbf1c02773329541b22aa5a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f93f9bd1edfdb032bbf1c02773329541b22aa5a7" "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" "+f93f9bd1edfdb032bbf1c02773329541b22aa5a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 38 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.10.0)
[INFO] [stderr]       Adding serial_test v0.4.0 (available: v3.3.1)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f93f9bd1edfdb032bbf1c02773329541b22aa5a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+f93f9bd1edfdb032bbf1c02773329541b22aa5a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3310e525228a547fc2de12dc7a5018a4253100c7c5af0796830958a6d1e3e920
[INFO] running `Command { std: "docker" "start" "-a" "3310e525228a547fc2de12dc7a5018a4253100c7c5af0796830958a6d1e3e920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3310e525228a547fc2de12dc7a5018a4253100c7c5af0796830958a6d1e3e920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3310e525228a547fc2de12dc7a5018a4253100c7c5af0796830958a6d1e3e920", kill_on_drop: false }`
[INFO] [stdout] 3310e525228a547fc2de12dc7a5018a4253100c7c5af0796830958a6d1e3e920
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+f93f9bd1edfdb032bbf1c02773329541b22aa5a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edbbe357b6ae44b3d78b43ed241ebbbf9450ebaa33250543f397aa306709ad2a
[INFO] running `Command { std: "docker" "start" "-a" "edbbe357b6ae44b3d78b43ed241ebbbf9450ebaa33250543f397aa306709ad2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling beastlink v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking spin_sleep v1.3.3
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]     Checking parking_lot_core v0.7.3
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]    Compiling serial_test_derive v0.4.0
[INFO] [stderr]     Checking serial_test v0.4.0
[INFO] [stderr]     Checking libarc2 v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]     --> src/instrument.rs:1364:54
[INFO] [stdout]      |
[INFO] [stdout] 1364 |             self.amp_prep(Some(&input.iter().map(|c| (c.0 as usize)).collect::<Vec<_>>()))?;
[INFO] [stdout]      |                                                      ^            ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1364 -             self.amp_prep(Some(&input.iter().map(|c| (c.0 as usize)).collect::<Vec<_>>()))?;
[INFO] [stdout] 1364 +             self.amp_prep(Some(&input.iter().map(|c| c.0 as usize ).collect::<Vec<_>>()))?;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]     --> src/instrument.rs:1364:54
[INFO] [stdout]      |
[INFO] [stdout] 1364 |             self.amp_prep(Some(&input.iter().map(|c| (c.0 as usize)).collect::<Vec<_>>()))?;
[INFO] [stdout]      |                                                      ^            ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1364 -             self.amp_prep(Some(&input.iter().map(|c| (c.0 as usize)).collect::<Vec<_>>()))?;
[INFO] [stdout] 1364 +             self.amp_prep(Some(&input.iter().map(|c| c.0 as usize ).collect::<Vec<_>>()))?;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/memory.rs:266:13
[INFO] [stdout]     |
[INFO] [stdout] 266 |         for i in 0..u32::MAX {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `dummy` is never used
[INFO] [stdout]   --> src/memory.rs:77:19
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl Chunk {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub(crate) fn dummy() -> Self {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `total_blocks` is never read
[INFO] [stdout]    --> src/memory.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub(crate) struct MemMan {
[INFO] [stdout]     |                   ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 144 |     total_blocks: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next` is never used
[INFO] [stdout]    --> src/memory.rs:170:8
[INFO] [stdout]     |
[INFO] [stdout] 152 | impl MemMan {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 170 |     fn next(&self) -> Option<u32> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_indices` is never used
[INFO] [stdout]     --> src/registers.rs:1702:19
[INFO] [stdout]      |
[INFO] [stdout] 1696 | impl DACVoltageMask {
[INFO] [stdout]      | ------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 1702 |     pub(crate) fn from_indices(indices: &[usize]) -> Self {
[INFO] [stdout]      |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Wx5` is never constructed
[INFO] [stdout]   --> src/registers.rs:58:16
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub struct Wx5;
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Wx6` is never constructed
[INFO] [stdout]   --> src/registers.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub struct Wx6;
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Wx7` is never constructed
[INFO] [stdout]   --> src/registers.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub struct Wx7;
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `dummy` is never used
[INFO] [stdout]   --> src/memory.rs:77:19
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl Chunk {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub(crate) fn dummy() -> Self {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_indices` is never used
[INFO] [stdout]     --> src/registers.rs:1702:19
[INFO] [stdout]      |
[INFO] [stdout] 1696 | impl DACVoltageMask {
[INFO] [stdout]      | ------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 1702 |     pub(crate) fn from_indices(indices: &[usize]) -> Self {
[INFO] [stdout]      |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Wx5` is never constructed
[INFO] [stdout]   --> src/registers.rs:58:16
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub struct Wx5;
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Wx6` is never constructed
[INFO] [stdout]   --> src/registers.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub struct Wx6;
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Wx7` is never constructed
[INFO] [stdout]   --> src/registers.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub struct Wx7;
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/memory.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         manager.free_chunk(&mut chunk1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 305 |         let _ = manager.free_chunk(&mut chunk1);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.05s
[INFO] running `Command { std: "docker" "inspect" "edbbe357b6ae44b3d78b43ed241ebbbf9450ebaa33250543f397aa306709ad2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edbbe357b6ae44b3d78b43ed241ebbbf9450ebaa33250543f397aa306709ad2a", kill_on_drop: false }`
[INFO] [stdout] edbbe357b6ae44b3d78b43ed241ebbbf9450ebaa33250543f397aa306709ad2a