[INFO] fetching crate ni 0.1.0...
[INFO] checking ni-0.1.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate ni 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ni 0.1.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d288556596976d6742dfbf79f4c3dc4bbb94be8f4b94b9ed9287ee053f6b9d3f
[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" "d288556596976d6742dfbf79f4c3dc4bbb94be8f4b94b9ed9287ee053f6b9d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d288556596976d6742dfbf79f4c3dc4bbb94be8f4b94b9ed9287ee053f6b9d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d288556596976d6742dfbf79f4c3dc4bbb94be8f4b94b9ed9287ee053f6b9d3f", kill_on_drop: false }`
[INFO] [stdout] d288556596976d6742dfbf79f4c3dc4bbb94be8f4b94b9ed9287ee053f6b9d3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 083f9c24890b264b521d60ddd4eeba2e2d66d48122c1104cdb8f439589ffd9cd
[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" "083f9c24890b264b521d60ddd4eeba2e2d66d48122c1104cdb8f439589ffd9cd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking ni v0.1.0 (/opt/rustwide/workdir)
[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]    = note: `#[warn(dead_code)]` on by default
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.29s
[INFO] running `Command { std: "docker" "inspect" "083f9c24890b264b521d60ddd4eeba2e2d66d48122c1104cdb8f439589ffd9cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "083f9c24890b264b521d60ddd4eeba2e2d66d48122c1104cdb8f439589ffd9cd", kill_on_drop: false }`
[INFO] [stdout] 083f9c24890b264b521d60ddd4eeba2e2d66d48122c1104cdb8f439589ffd9cd