[INFO] cloning repository https://github.com/jerry73204/apriltag-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jerry73204/apriltag-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjerry73204%2Fapriltag-rust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjerry73204%2Fapriltag-rust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d8d71d208a748fd312e7a73ce9d76e08b7a3f008
[INFO] checking jerry73204/apriltag-rust against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjerry73204%2Fapriltag-rust" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jerry73204/apriltag-rust on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jerry73204/apriltag-rust
[INFO] removed path dependency apriltag-sys from git repo https://github.com/jerry73204/apriltag-rust
[INFO] finished tweaking git repo https://github.com/jerry73204/apriltag-rust
[INFO] tweaked toml for git repo https://github.com/jerry73204/apriltag-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/jerry73204/apriltag-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded apriltag-sys v0.1.3
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 755d2d18e94af2453c0b4d788d537e5c6fd9de8f1a74b3363a9c7af76f6797c6
[INFO] running `"docker" "start" "-a" "755d2d18e94af2453c0b4d788d537e5c6fd9de8f1a74b3363a9c7af76f6797c6"`
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling apriltag-sys v0.1.3
[INFO] [stderr]     Checking apriltag v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Deref`
[INFO] [stderr]   --> src/image_buf.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 |     ops::{Deref, Index, IndexMut},
[INFO] [stderr]    |           ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/image_buf.rs:329:9
[INFO] [stderr]     |
[INFO] [stderr] 329 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Deref`
[INFO] [stderr]   --> src/image_buf.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 |     ops::{Deref, Index, IndexMut},
[INFO] [stderr]    |           ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `zarray`
[INFO] [stderr]    --> src/detector.rs:147:13
[INFO] [stderr]     |
[INFO] [stderr] 147 |         let zarray = unsafe {
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_zarray`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `zarray`
[INFO] [stderr]    --> src/detector.rs:147:13
[INFO] [stderr]     |
[INFO] [stderr] 147 |         let zarray = unsafe {
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_zarray`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEFAULT_ALIGNMENT_U8`
[INFO] [stderr]   --> src/image_buf.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const DEFAULT_ALIGNMENT_U8: usize = 96;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/zarray.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/zarray.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn iter(&self) -> ZarrayIter<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DEFAULT_ALIGNMENT_U8`
[INFO] [stderr]   --> src/image_buf.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const DEFAULT_ALIGNMENT_U8: usize = 96;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/zarray.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/zarray.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn iter(&self) -> ZarrayIter<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.47s
[INFO] running `"docker" "inspect" "755d2d18e94af2453c0b4d788d537e5c6fd9de8f1a74b3363a9c7af76f6797c6"`
[INFO] running `"docker" "rm" "-f" "755d2d18e94af2453c0b4d788d537e5c6fd9de8f1a74b3363a9c7af76f6797c6"`
[INFO] [stdout] 755d2d18e94af2453c0b4d788d537e5c6fd9de8f1a74b3363a9c7af76f6797c6