[INFO] updating cached repository https://github.com/kitwestneat/rust-ext2-fuse
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 49a6c8d1c5bfdea57e31a944880eb118a2c7c5a9
[INFO] checking kitwestneat/rust-ext2-fuse against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitwestneat%2Frust-ext2-fuse" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kitwestneat/rust-ext2-fuse on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kitwestneat/rust-ext2-fuse
[INFO] finished tweaking git repo https://github.com/kitwestneat/rust-ext2-fuse
[INFO] tweaked toml for git repo https://github.com/kitwestneat/rust-ext2-fuse written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/kitwestneat/rust-ext2-fuse already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bf38a05eb18565be2cf1de737250d908fbffd317aba4623228523753e096b99f
[INFO] running `"docker" "start" "-a" "bf38a05eb18565be2cf1de737250d908fbffd317aba4623228523753e096b99f"`
[INFO] [stderr]     Checking fuse v0.3.1
[INFO] [stderr]     Checking ext2-fuse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `new_size`
[INFO] [stderr]    --> src/ext2/mod.rs:559:86
[INFO] [stderr]     |
[INFO] [stderr] 559 |     fn append_block_to_inode(&mut self, ino: u64, inode: &mut Inode, block_num: u32, new_size: u64) -> Result<(), c_int> {
[INFO] [stderr]     |                                                                                      ^^^^^^^^ help: consider prefixing with an underscore: `_new_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_size`
[INFO] [stderr]    --> src/ext2/mod.rs:559:86
[INFO] [stderr]     |
[INFO] [stderr] 559 |     fn append_block_to_inode(&mut self, ino: u64, inode: &mut Inode, block_num: u32, new_size: u64) -> Result<(), c_int> {
[INFO] [stderr]     |                                                                                      ^^^^^^^^ help: consider prefixing with an underscore: `_new_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `store_block`
[INFO] [stderr]    --> src/ext2/mod.rs:376:5
[INFO] [stderr]     |
[INFO] [stderr] 376 |     fn store_block<T>(&self, block_no: u32, buf: *const T) -> Result<(), c_int> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `alloc_block`
[INFO] [stderr]    --> src/ext2/mod.rs:432:5
[INFO] [stderr]     |
[INFO] [stderr] 432 |     fn alloc_block(&mut self, ino: u64) -> Result<u32, c_int> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `append_block_to_inode`
[INFO] [stderr]    --> src/ext2/mod.rs:559:5
[INFO] [stderr]     |
[INFO] [stderr] 559 |     fn append_block_to_inode(&mut self, ino: u64, inode: &mut Inode, block_num: u32, new_size: u64) -> Result<(), c_int> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `store_block`
[INFO] [stderr]    --> src/ext2/mod.rs:376:5
[INFO] [stderr]     |
[INFO] [stderr] 376 |     fn store_block<T>(&self, block_no: u32, buf: *const T) -> Result<(), c_int> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `alloc_block`
[INFO] [stderr]    --> src/ext2/mod.rs:432:5
[INFO] [stderr]     |
[INFO] [stderr] 432 |     fn alloc_block(&mut self, ino: u64) -> Result<u32, c_int> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `append_block_to_inode`
[INFO] [stderr]    --> src/ext2/mod.rs:559:5
[INFO] [stderr]     |
[INFO] [stderr] 559 |     fn append_block_to_inode(&mut self, ino: u64, inode: &mut Inode, block_num: u32, new_size: u64) -> Result<(), c_int> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.52s
[INFO] running `"docker" "inspect" "bf38a05eb18565be2cf1de737250d908fbffd317aba4623228523753e096b99f"`
[INFO] running `"docker" "rm" "-f" "bf38a05eb18565be2cf1de737250d908fbffd317aba4623228523753e096b99f"`
[INFO] [stdout] bf38a05eb18565be2cf1de737250d908fbffd317aba4623228523753e096b99f