[INFO] fetching crate rf-core 0.6.0...
[INFO] testing rf-core-0.6.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate rf-core 0.6.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate rf-core 0.6.0
[INFO] finished tweaking crates.io crate rf-core 0.6.0
[INFO] tweaked toml for crates.io crate rf-core 0.6.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rf-core 0.6.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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 21 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc9cc84dcff0ff7b6ba5d91afaf099b7e7dd4ba49c21ac4b5c961992bb7f7d62
[INFO] running `Command { std: "docker" "start" "-a" "cc9cc84dcff0ff7b6ba5d91afaf099b7e7dd4ba49c21ac4b5c961992bb7f7d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc9cc84dcff0ff7b6ba5d91afaf099b7e7dd4ba49c21ac4b5c961992bb7f7d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc9cc84dcff0ff7b6ba5d91afaf099b7e7dd4ba49c21ac4b5c961992bb7f7d62", kill_on_drop: false }`
[INFO] [stdout] cc9cc84dcff0ff7b6ba5d91afaf099b7e7dd4ba49c21ac4b5c961992bb7f7d62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51eaff8a4d2a4ba59002093c96bc9ebe130ac0a7c4165a623f805fb1c04e40c2
[INFO] running `Command { std: "docker" "start" "-a" "51eaff8a4d2a4ba59002093c96bc9ebe130ac0a7c4165a623f805fb1c04e40c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rf-core v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lang.rs:158:10
[INFO] [stdout]     |
[INFO] [stdout] 158 |         |mut vm| {
[INFO] [stdout]     |          ----^^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `stack` and `is_folding` are never used
[INFO] [stdout]   --> src/vm/vm_status.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl VMStatus {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn stack(&self) -> &VecDeque<(Path, i32, Option<i32>)> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn is_folding(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.90s
[INFO] running `Command { std: "docker" "inspect" "51eaff8a4d2a4ba59002093c96bc9ebe130ac0a7c4165a623f805fb1c04e40c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51eaff8a4d2a4ba59002093c96bc9ebe130ac0a7c4165a623f805fb1c04e40c2", kill_on_drop: false }`
[INFO] [stdout] 51eaff8a4d2a4ba59002093c96bc9ebe130ac0a7c4165a623f805fb1c04e40c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82fa4ebf631ec3973452f841e9f0b8a059836a4b68897ec10bae9d3f6abf1de6
[INFO] running `Command { std: "docker" "start" "-a" "82fa4ebf631ec3973452f841e9f0b8a059836a4b68897ec10bae9d3f6abf1de6", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lang.rs:158:10
[INFO] [stdout]     |
[INFO] [stdout] 158 |         |mut vm| {
[INFO] [stdout]     |          ----^^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `stack` and `is_folding` are never used
[INFO] [stdout]   --> src/vm/vm_status.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl VMStatus {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn stack(&self) -> &VecDeque<(Path, i32, Option<i32>)> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn is_folding(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rf-core v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> tests/by_round/mod.rs:101:20
[INFO] [stdout]     |
[INFO] [stdout] 101 |             |a, b| (a + b),
[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] 101 -             |a, b| (a + b),
[INFO] [stdout] 101 +             |a, b| a + b ,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> tests/by_round/mod.rs:196:20
[INFO] [stdout]     |
[INFO] [stdout] 196 |             |a, b| (a + b),
[INFO] [stdout]     |                    ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 196 -             |a, b| (a + b),
[INFO] [stdout] 196 +             |a, b| a + b ,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> tests/gradient/mod.rs:50:29
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 .filter(|n| (n > &0 && n < &6))
[INFO] [stdout]    |                             ^                ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -                 .filter(|n| (n > &0 && n < &6))
[INFO] [stdout] 50 +                 .filter(|n| n > &0 && n < &6 )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm`
[INFO] [stdout]   --> tests/by_equivalence/mod.rs:31:14
[INFO] [stdout]    |
[INFO] [stdout] 31 |             |vm| 0,
[INFO] [stdout]    |              ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm`
[INFO] [stdout]    --> tests/by_equivalence/mod.rs:113:14
[INFO] [stdout]     |
[INFO] [stdout] 113 |             |vm| 0,
[INFO] [stdout]     |              ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm`
[INFO] [stdout]   --> tests/by_round/mod.rs:48:54
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let result = round(&mut init_with_ctx(context), |vm| 10);
[INFO] [stdout]    |                                                      ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm3`
[INFO] [stdout]    --> tests/by_round/mod.rs:140:32
[INFO] [stdout]     |
[INFO] [stdout] 140 |             |vm2, _| rep(vm2, |vm3| 0, |vm4, _| expr_2(vm4)),
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_vm3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm1`
[INFO] [stdout]    --> tests/by_round/mod.rs:139:14
[INFO] [stdout]     |
[INFO] [stdout] 139 |             |vm1| 0,
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_vm1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm1`
[INFO] [stdout]    --> tests/by_round/mod.rs:129:14
[INFO] [stdout]     |
[INFO] [stdout] 129 |             |vm1| 0,
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_vm1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm1`
[INFO] [stdout]    --> tests/by_round/mod.rs:234:67
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let result = round(&mut init_with_ctx(context), |vm| nbr(vm, |vm1| 7));
[INFO] [stdout]     |                                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_vm1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm1`
[INFO] [stdout]    --> tests/by_round/mod.rs:274:55
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let program = |vm: &mut RoundVM| rep(vm, |vm| 9, |vm1, a| a * 2);
[INFO] [stdout]     |                                                       ^^^ help: if this is intentional, prefix it with an underscore: `_vm1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm`
[INFO] [stdout]    --> tests/by_round/mod.rs:274:47
[INFO] [stdout]     |
[INFO] [stdout] 274 |     let program = |vm: &mut RoundVM| rep(vm, |vm| 9, |vm1, a| a * 2);
[INFO] [stdout]     |                                               ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lang.rs:158:10
[INFO] [stdout]     |
[INFO] [stdout] 158 |         |mut vm| {
[INFO] [stdout]     |          ----^^
[INFO] [stdout]     |          |
[INFO] [stdout]     |          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `self_id` is never read
[INFO] [stdout]    --> tests/utils/mod.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub struct DeviceState {
[INFO] [stdout]     |            ----------- field in this struct
[INFO] [stdout] 137 |     pub self_id: i32,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DeviceState` 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] warning: field `devices` is never read
[INFO] [stdout]    --> tests/utils/mod.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 150 | pub struct Topology {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 151 |     pub devices: Vec<i32>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Topology` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `status`
[INFO] [stdout]    --> src/vm/round_vm.rs:378:13
[INFO] [stdout]     |
[INFO] [stdout] 378 |         let status = VMStatus::new();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm`
[INFO] [stdout]    --> src/vm/round_vm.rs:383:13
[INFO] [stdout]     |
[INFO] [stdout] 383 |     fn expr(vm: &mut RoundVM) -> i32 {
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm`
[INFO] [stdout]    --> src/vm/round_vm.rs:454:34
[INFO] [stdout]     |
[INFO] [stdout] 454 |         let result = vm.isolate(|vm| 5 * 3);
[INFO] [stdout]     |                                  ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `stack` is never used
[INFO] [stdout]   --> src/vm/vm_status.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl VMStatus {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn stack(&self) -> &VecDeque<(Path, i32, Option<i32>)> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `Command { std: "docker" "inspect" "82fa4ebf631ec3973452f841e9f0b8a059836a4b68897ec10bae9d3f6abf1de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82fa4ebf631ec3973452f841e9f0b8a059836a4b68897ec10bae9d3f6abf1de6", kill_on_drop: false }`
[INFO] [stdout] 82fa4ebf631ec3973452f841e9f0b8a059836a4b68897ec10bae9d3f6abf1de6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fab3eac9296fd4bf8cdd5fa8bfd38726a85173a1da0020a2b66ff7437454ebfb
[INFO] running `Command { std: "docker" "start" "-a" "fab3eac9296fd4bf8cdd5fa8bfd38726a85173a1da0020a2b66ff7437454ebfb", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lang.rs:158:10
[INFO] [stderr]     |
[INFO] [stderr] 158 |         |mut vm| {
[INFO] [stderr]     |          ----^^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `stack` and `is_folding` are never used
[INFO] [stderr]   --> src/vm/vm_status.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl VMStatus {
[INFO] [stderr]    | ------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 58 |     pub fn stack(&self) -> &VecDeque<(Path, i32, Option<i32>)> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 67 |     pub fn is_folding(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rf-core` (lib) generated 2 warnings (run `cargo fix --lib -p rf-core` to apply 1 suggestion)
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]    --> tests/by_round/mod.rs:101:20
[INFO] [stderr]     |
[INFO] [stderr] 101 |             |a, b| (a + b),
[INFO] [stderr]     |                    ^     ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 101 -             |a, b| (a + b),
[INFO] [stderr] 101 +             |a, b| a + b ,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]    --> tests/by_round/mod.rs:196:20
[INFO] [stderr]     |
[INFO] [stderr] 196 |             |a, b| (a + b),
[INFO] [stderr]     |                    ^     ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 196 -             |a, b| (a + b),
[INFO] [stderr] 196 +             |a, b| a + b ,
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> tests/gradient/mod.rs:50:29
[INFO] [stderr]    |
[INFO] [stderr] 50 |                 .filter(|n| (n > &0 && n < &6))
[INFO] [stderr]    |                             ^                ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 50 -                 .filter(|n| (n > &0 && n < &6))
[INFO] [stderr] 50 +                 .filter(|n| n > &0 && n < &6 )
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm`
[INFO] [stderr]   --> tests/by_equivalence/mod.rs:31:14
[INFO] [stderr]    |
[INFO] [stderr] 31 |             |vm| 0,
[INFO] [stderr]    |              ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm`
[INFO] [stderr]    --> tests/by_equivalence/mod.rs:113:14
[INFO] [stderr]     |
[INFO] [stderr] 113 |             |vm| 0,
[INFO] [stderr]     |              ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm`
[INFO] [stderr]   --> tests/by_round/mod.rs:48:54
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let result = round(&mut init_with_ctx(context), |vm| 10);
[INFO] [stderr]    |                                                      ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm3`
[INFO] [stderr]    --> tests/by_round/mod.rs:140:32
[INFO] [stderr]     |
[INFO] [stderr] 140 |             |vm2, _| rep(vm2, |vm3| 0, |vm4, _| expr_2(vm4)),
[INFO] [stderr]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_vm3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm1`
[INFO] [stderr]    --> tests/by_round/mod.rs:139:14
[INFO] [stderr]     |
[INFO] [stderr] 139 |             |vm1| 0,
[INFO] [stderr]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_vm1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm1`
[INFO] [stderr]    --> tests/by_round/mod.rs:129:14
[INFO] [stderr]     |
[INFO] [stderr] 129 |             |vm1| 0,
[INFO] [stderr]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_vm1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm1`
[INFO] [stderr]    --> tests/by_round/mod.rs:234:67
[INFO] [stderr]     |
[INFO] [stderr] 234 |     let result = round(&mut init_with_ctx(context), |vm| nbr(vm, |vm1| 7));
[INFO] [stderr]     |                                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_vm1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm1`
[INFO] [stderr]    --> tests/by_round/mod.rs:274:55
[INFO] [stderr]     |
[INFO] [stderr] 274 |     let program = |vm: &mut RoundVM| rep(vm, |vm| 9, |vm1, a| a * 2);
[INFO] [stderr]     |                                                       ^^^ help: if this is intentional, prefix it with an underscore: `_vm1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm`
[INFO] [stderr]    --> tests/by_round/mod.rs:274:47
[INFO] [stderr]     |
[INFO] [stderr] 274 |     let program = |vm: &mut RoundVM| rep(vm, |vm| 9, |vm1, a| a * 2);
[INFO] [stderr]     |                                               ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stderr] 
[INFO] [stderr] warning: field `self_id` is never read
[INFO] [stderr]    --> tests/utils/mod.rs:137:9
[INFO] [stderr]     |
[INFO] [stderr] 136 | pub struct DeviceState {
[INFO] [stderr]     |            ----------- field in this struct
[INFO] [stderr] 137 |     pub self_id: i32,
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `DeviceState` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `devices` is never read
[INFO] [stderr]    --> tests/utils/mod.rs:151:9
[INFO] [stderr]     |
[INFO] [stderr] 150 | pub struct Topology {
[INFO] [stderr]     |            -------- field in this struct
[INFO] [stderr] 151 |     pub devices: Vec<i32>,
[INFO] [stderr]     |         ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Topology` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `rf-core` (test "mod") generated 14 warnings (run `cargo fix --test "mod" -p rf-core` to apply 12 suggestions)
[INFO] [stderr] warning: unused variable: `status`
[INFO] [stderr]    --> src/vm/round_vm.rs:378:13
[INFO] [stderr]     |
[INFO] [stderr] 378 |         let status = VMStatus::new();
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm`
[INFO] [stderr]    --> src/vm/round_vm.rs:383:13
[INFO] [stderr]     |
[INFO] [stderr] 383 |     fn expr(vm: &mut RoundVM) -> i32 {
[INFO] [stderr]     |             ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vm`
[INFO] [stderr]    --> src/vm/round_vm.rs:454:34
[INFO] [stderr]     |
[INFO] [stderr] 454 |         let result = vm.isolate(|vm| 5 * 3);
[INFO] [stderr]     |                                  ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stderr] 
[INFO] [stderr] warning: method `stack` is never used
[INFO] [stderr]   --> src/vm/vm_status.rs:58:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl VMStatus {
[INFO] [stderr]    | ------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 58 |     pub fn stack(&self) -> &VecDeque<(Path, i32, Option<i32>)> {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rf-core` (lib test) generated 5 warnings (1 duplicate) (run `cargo fix --lib -p rf-core --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rf_core-7024217f6c16e042)
[INFO] [stdout] 
[INFO] [stdout] running 49 tests
[INFO] [stdout] test context::test::test_local_sense ... ok
[INFO] [stdout] test context::test::test_nbr_sense ... ok
[INFO] [stdout] test context::test::test_put_export ... ok
[INFO] [stdout] test export::tests::test_empty_state ... ok
[INFO] [stdout] test export::tests::test_get ... ok
[INFO] [stdout] test export::tests::test_get_none ... ok
[INFO] [stdout] test export::tests::test_new ... ok
[INFO] [stdout] test export::tests::test_new_empty ... ok
[INFO] [stdout] test export::tests::test_non_root_path ... ok
[INFO] [stdout] test export::tests::test_overwriting_with_different_type ... ok
[INFO] [stdout] test export::tests::test_partial_eq ... ok
[INFO] [stdout] test export::tests::test_paths ... ok
[INFO] [stdout] test context::test::assert_on_fields ... ok
[INFO] [stdout] test export::tests::test_put ... ok
[INFO] [stdout] test context::test::test_read_export_value ... ok
[INFO] [stdout] test export::tests::test_put_lazy ... ok
[INFO] [stdout] test export::tests::test_root ... ok
[INFO] [stdout] test export::tests::test_root_path ... ok
[INFO] [stdout] test path::tests::test_empty_head ... ok
[INFO] [stdout] test path::tests::test_is_root ... ok
[INFO] [stdout] test path::tests::test_matches ... ok
[INFO] [stdout] test export::tests::test_serialize_and_deserialize ... ok
[INFO] [stdout] test path::tests::test_not_empty_head ... ok
[INFO] [stdout] test path::tests::test_not_empty_pull ... ok
[INFO] [stdout] test path::tests::test_push ... ok
[INFO] [stdout] test path::tests::test_serialize_and_deserialize ... ok
[INFO] [stdout] test sensor_id::tests::test_new ... ok
[INFO] [stdout] test slot::test::test_serialize_deserialize ... ok
[INFO] [stdout] test slot::test::test_slot_to_string ... ok
[INFO] [stdout] test path::tests::test_empty_pull ... ok
[INFO] [stdout] test vm::round_vm::tests::test_aligned_neighbours ... ok
[INFO] [stdout] test vm::round_vm::tests::test_export_data ... ok
[INFO] [stdout] test vm::round_vm::tests::test_isolate ... ok
[INFO] [stdout] test vm::round_vm::tests::test_folded_eval ... ok
[INFO] [stdout] test vm::round_vm::tests::test_nbr_sense ... ok
[INFO] [stdout] test vm::round_vm::tests::test_local_sense ... ok
[INFO] [stdout] test vm::round_vm::tests::test_neighbor_val ... ok
[INFO] [stdout] test vm::round_vm::tests::test_register_root ... ok
[INFO] [stdout] test vm::vm_status::test::test_as_stack ... ok
[INFO] [stdout] test vm::vm_status::test::test_index ... ok
[INFO] [stdout] test vm::round_vm::tests::test_only_when_folding_on_self ... ok
[INFO] [stdout] test vm::round_vm::tests::test_unless_folding_on_others ... ok
[INFO] [stdout] test vm::round_vm::tests::test_previous_round_val ... ok
[INFO] [stdout] test vm::vm_status::test::test_empty ... ok
[INFO] [stdout] test vm::vm_status::test::test_fold_unfold ... ok
[INFO] [stdout] test export::tests::test_put_lazy_and_return ... ok
[INFO] [stdout] test path::tests::test_to_str ... ok
[INFO] [stdout] test slot::test::test_slot_creation ... ok
[INFO] [stderr]      Running tests/mod.rs (/opt/rustwide/target/debug/deps/mod-b0897e77a9b6594c)
[INFO] [stdout] test export::tests::test_root_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 49 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test by_round::export_should_compose ... ok
[INFO] [stdout] test by_round::test_foldhood_advanced ... ok
[INFO] [stdout] test by_round::test_branch ... ok
[INFO] [stdout] test by_round::test_foldhood_basic ... ok
[INFO] [stdout] test by_round::test_alignment ... ok
[INFO] [stdout] test by_round::test_local_value ... ok
[INFO] [stdout] test by_equivalence::fold_fold_work ... ok
[INFO] [stdout] test by_equivalence::rep_nbr_ignored_overall ... ok
[INFO] [stdout] test by_round::test_rep ... ok
[INFO] [stdout] test by_round::test_sense ... ok
[INFO] [stdout] test by_round::test_multiple_rounds ... ok
[INFO] [stdout] test gradient::test_multiple_sources ... ok
[INFO] [stdout] test by_equivalence::foldhood_multiple_nbrs ... ok
[INFO] [stdout] test by_equivalence::rep_nbr_ignored_first_argument ... ok
[INFO] [stdout] test gradient::test_exports ... ok
[INFO] [stdout] test by_round::test_nbr ... ok
[INFO] [stdout] test by_equivalence::fold_init_nbr_ignored ... ok
[INFO] [stdout] test by_equivalence::nbr_nbr_ignored ... ok
[INFO] [stdout] test gradient::test_single_source ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rf_core
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fab3eac9296fd4bf8cdd5fa8bfd38726a85173a1da0020a2b66ff7437454ebfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fab3eac9296fd4bf8cdd5fa8bfd38726a85173a1da0020a2b66ff7437454ebfb", kill_on_drop: false }`
[INFO] [stdout] fab3eac9296fd4bf8cdd5fa8bfd38726a85173a1da0020a2b66ff7437454ebfb
