[INFO] crate sufdb 0.1.7 is already in cache
[INFO] checking sufdb-0.1.7 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate sufdb 0.1.7 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate sufdb 0.1.7 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate sufdb 0.1.7
[INFO] finished tweaking crates.io crate sufdb 0.1.7
[INFO] tweaked toml for crates.io crate sufdb 0.1.7 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] 4936161efd4ad965429c1b48530646217e7860cee59613c2d8dc85d3aa66d2bb
[INFO] running `"docker" "start" "-a" "4936161efd4ad965429c1b48530646217e7860cee59613c2d8dc85d3aa66d2bb"`
[INFO] [stderr]     Checking suffix v1.2.0
[INFO] [stderr]     Checking sufdb v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 299 |         div!();
[INFO] [stderr]     |         ------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 300 |         w!("order: {}", self.order);
[INFO] [stderr]     |         ---------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 301 |         w!("#documents: {}", self.documents.len());
[INFO] [stderr]     |         ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 302 |         w!("#nodes: {}", self.nodes.len());
[INFO] [stderr]     |         ----------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 303 |         div!(39);
[INFO] [stderr]     |         --------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 304 |         for doc in &self.documents { w!("{:?}", doc); }
[INFO] [stderr]     |                                      ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 305 |         div!(39);
[INFO] [stderr]     |         --------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 307 |             if i > 0 { div!(15); }
[INFO] [stderr]     |                        --------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 309 |                 w!("id: {} (root)", i);
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 311 |                 w!("id: {}", i);
[INFO] [stderr]     |                 ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 313 |             w!("parent: {:?}", n.parent);
[INFO] [stderr]     |             ----------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 314 |             w!("next: {:?}", n.next);
[INFO] [stderr]     |             ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 315 |             w!("edges: {:?}", n.edges);
[INFO] [stderr]     |             --------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 317 |                 w!("{:4}: {:?}: {}", i, s, self.suffix(s));
[INFO] [stderr]     |                 ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 320 |         div!(); Ok(())
[INFO] [stderr]     |         ------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/btree.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | / macro_rules! lg {
[INFO] [stderr] 19 | |     ($($tt:tt)*) => ({
[INFO] [stderr] 20 | |         use std::io::{Write, stderr};
[INFO] [stderr] 21 | |         (writeln!(&mut stderr(), $($tt)*)).unwrap();
[INFO] [stderr] 22 | |     });
[INFO] [stderr] 23 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 299 |         div!();
[INFO] [stderr]     |         ------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 300 |         w!("order: {}", self.order);
[INFO] [stderr]     |         ---------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 301 |         w!("#documents: {}", self.documents.len());
[INFO] [stderr]     |         ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 302 |         w!("#nodes: {}", self.nodes.len());
[INFO] [stderr]     |         ----------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 303 |         div!(39);
[INFO] [stderr]     |         --------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 304 |         for doc in &self.documents { w!("{:?}", doc); }
[INFO] [stderr]     |                                      ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 305 |         div!(39);
[INFO] [stderr]     |         --------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 307 |             if i > 0 { div!(15); }
[INFO] [stderr]     |                        --------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 309 |                 w!("id: {} (root)", i);
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 311 |                 w!("id: {}", i);
[INFO] [stderr]     |                 ---------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 313 |             w!("parent: {:?}", n.parent);
[INFO] [stderr]     |             ----------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 314 |             w!("next: {:?}", n.next);
[INFO] [stderr]     |             ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 315 |             w!("edges: {:?}", n.edges);
[INFO] [stderr]     |             --------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 317 |                 w!("{:4}: {:?}: {}", i, s, self.suffix(s));
[INFO] [stderr]     |                 ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/btree.rs:291:43
[INFO] [stderr]     |
[INFO] [stderr] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stderr]     |                                           ^^^
[INFO] [stderr] ...
[INFO] [stderr] 320 |         div!(); Ok(())
[INFO] [stderr]     |         ------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: `std::borrow::Cow<'_, [u32]>` is not an iterator
[INFO] [stderr]    --> src/btree.rs:216:22
[INFO] [stderr]     |
[INFO] [stderr] 216 |         for sufid in table {
[INFO] [stderr]     |                      ^^^^^ `std::borrow::Cow<'_, [u32]>` is not an iterator
[INFO] [stderr]     |
[INFO] [stderr]     = help: the trait `std::iter::Iterator` is not implemented for `std::borrow::Cow<'_, [u32]>`
[INFO] [stderr]     = note: required by `std::iter::IntoIterator::into_iter`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `sufdb`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0277]: `std::borrow::Cow<'_, [u32]>` is not an iterator
[INFO] [stderr]    --> src/btree.rs:216:22
[INFO] [stderr]     |
[INFO] [stderr] 216 |         for sufid in table {
[INFO] [stderr]     |                      ^^^^^ `std::borrow::Cow<'_, [u32]>` is not an iterator
[INFO] [stderr]     |
[INFO] [stderr]     = help: the trait `std::iter::Iterator` is not implemented for `std::borrow::Cow<'_, [u32]>`
[INFO] [stderr]     = note: required by `std::iter::IntoIterator::into_iter`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `sufdb`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4936161efd4ad965429c1b48530646217e7860cee59613c2d8dc85d3aa66d2bb"`
[INFO] running `"docker" "rm" "-f" "4936161efd4ad965429c1b48530646217e7860cee59613c2d8dc85d3aa66d2bb"`
[INFO] [stdout] 4936161efd4ad965429c1b48530646217e7860cee59613c2d8dc85d3aa66d2bb
