[INFO] fetching crate ni 0.1.0...
[INFO] checking ni-0.1.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate ni 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ni 0.1.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ni 0.1.0
[INFO] finished tweaking crates.io crate ni 0.1.0
[INFO] tweaked toml for crates.io crate ni 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b055b967a2dcb04365957711053887669ad9ebcb35afc84d97e61c42d10e1fe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5b055b967a2dcb04365957711053887669ad9ebcb35afc84d97e61c42d10e1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b055b967a2dcb04365957711053887669ad9ebcb35afc84d97e61c42d10e1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b055b967a2dcb04365957711053887669ad9ebcb35afc84d97e61c42d10e1fe", kill_on_drop: false }`
[INFO] [stdout] 5b055b967a2dcb04365957711053887669ad9ebcb35afc84d97e61c42d10e1fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f09f52f33e560047880a3d85b5488a93744a29a7c2ab6a2d15d8f8d255a3fe2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9f09f52f33e560047880a3d85b5488a93744a29a7c2ab6a2d15d8f8d255a3fe2", kill_on_drop: false }`
[INFO] [stderr]     Checking ni v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `count`
[INFO] [stdout]   --> src/executor/files.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     count: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constant is never used: `LIMIT`
[INFO] [stdout]   --> src/executor/files.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub const LIMIT: usize = 64;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open`
[INFO] [stdout]   --> src/executor/files.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn open<F>(&mut self, file: F) -> Result<UWord, (FilesError, F)>
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `close`
[INFO] [stdout]    --> src/executor/files.rs:119:12
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn close(&mut self, idx: UWord) -> Result<Box<dyn File>, FilesError> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update`
[INFO] [stdout]    --> src/executor/memory.rs:154:12
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub fn update<T, F>(&mut self, ptr: UWord, f: F) -> Result<(), MemoryError>
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `types`
[INFO] [stdout]   --> src/nil/layout.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub(super) types: View<Ty<'t>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/nil/layout.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(super) name: &'n str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ptr`
[INFO] [stdout]   --> src/nil/layout.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub(super) ptr: UWord,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `types`
[INFO] [stdout]   --> src/nil/layout.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub(super) types: View<Ty<'t>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/nil/layout.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(super) name: &'n str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ptr`
[INFO] [stdout]   --> src/nil/layout.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub(super) ptr: UWord,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.93s
[INFO] running `Command { std: "docker" "inspect" "9f09f52f33e560047880a3d85b5488a93744a29a7c2ab6a2d15d8f8d255a3fe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f09f52f33e560047880a3d85b5488a93744a29a7c2ab6a2d15d8f8d255a3fe2", kill_on_drop: false }`
[INFO] [stdout] 9f09f52f33e560047880a3d85b5488a93744a29a7c2ab6a2d15d8f8d255a3fe2