[INFO] fetching crate sufdb 0.1.7...
[INFO] checking sufdb-0.1.7 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate sufdb 0.1.7 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate sufdb 0.1.7 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f4a9b673a4095f6db25b944ebee48096c374c21304e31188255418ca9e77522
[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" "0f4a9b673a4095f6db25b944ebee48096c374c21304e31188255418ca9e77522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f4a9b673a4095f6db25b944ebee48096c374c21304e31188255418ca9e77522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f4a9b673a4095f6db25b944ebee48096c374c21304e31188255418ca9e77522", kill_on_drop: false }`
[INFO] [stdout] 0f4a9b673a4095f6db25b944ebee48096c374c21304e31188255418ca9e77522
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f3cf59b7e161b36e2c85a0cfff20eacc7c75da4c4dc7425323e97e4863b7b5a8
[INFO] running `Command { std: "docker" "start" "-a" "f3cf59b7e161b36e2c85a0cfff20eacc7c75da4c4dc7425323e97e4863b7b5a8", kill_on_drop: false }`
[INFO] [stderr]     Checking suffix v1.2.0
[INFO] [stderr]     Checking sufdb v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/btree.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(collections)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 299 |         div!();
[INFO] [stdout]     |         ------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 300 |         w!("order: {}", self.order);
[INFO] [stdout]     |         ---------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 301 |         w!("#documents: {}", self.documents.len());
[INFO] [stdout]     |         ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 302 |         w!("#nodes: {}", self.nodes.len());
[INFO] [stdout]     |         ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 |         div!(39);
[INFO] [stdout]     |         --------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 304 |         for doc in &self.documents { w!("{:?}", doc); }
[INFO] [stdout]     |                                      ---------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 305 |         div!(39);
[INFO] [stdout]     |         --------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 307 |             if i > 0 { div!(15); }
[INFO] [stdout]     |                        --------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 309 |                 w!("id: {} (root)", i);
[INFO] [stdout]     |                 ----------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 311 |                 w!("id: {}", i);
[INFO] [stdout]     |                 ---------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 313 |             w!("parent: {:?}", n.parent);
[INFO] [stdout]     |             ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 314 |             w!("next: {:?}", n.next);
[INFO] [stdout]     |             ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 315 |             w!("edges: {:?}", n.edges);
[INFO] [stdout]     |             --------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 317 |                 w!("{:4}: {:?}: {}", i, s, self.suffix(s));
[INFO] [stdout]     |                 ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 320 |         div!(); Ok(())
[INFO] [stdout]     |         ------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/btree.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(collections)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 299 |         div!();
[INFO] [stdout]     |         ------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 300 |         w!("order: {}", self.order);
[INFO] [stdout]     |         ---------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 301 |         w!("#documents: {}", self.documents.len());
[INFO] [stdout]     |         ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 302 |         w!("#nodes: {}", self.nodes.len());
[INFO] [stdout]     |         ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 303 |         div!(39);
[INFO] [stdout]     |         --------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 304 |         for doc in &self.documents { w!("{:?}", doc); }
[INFO] [stdout]     |                                      ---------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 305 |         div!(39);
[INFO] [stdout]     |         --------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 307 |             if i > 0 { div!(15); }
[INFO] [stdout]     |                        --------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 309 |                 w!("id: {} (root)", i);
[INFO] [stdout]     |                 ----------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 311 |                 w!("id: {}", i);
[INFO] [stdout]     |                 ---------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 313 |             w!("parent: {:?}", n.parent);
[INFO] [stdout]     |             ----------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 314 |             w!("next: {:?}", n.next);
[INFO] [stdout]     |             ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 315 |             w!("edges: {:?}", n.edges);
[INFO] [stdout]     |             --------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 317 |                 w!("{:4}: {:?}: {}", i, s, self.suffix(s));
[INFO] [stdout]     |                 ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/btree.rs:291:43
[INFO] [stdout]     |
[INFO] [stdout] 291 |         macro_rules! w { ($($tt:tt)*) => (try!(writeln!(f, $($tt)*));); }
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 320 |         div!(); Ok(())
[INFO] [stdout]     |         ------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/btree.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / macro_rules! lg {
[INFO] [stdout] 19 | |     ($($tt:tt)*) => ({
[INFO] [stdout] 20 | |         use std::io::{Write, stderr};
[INFO] [stdout] 21 | |         (writeln!(&mut stderr(), $($tt)*)).unwrap();
[INFO] [stdout] 22 | |     });
[INFO] [stdout] 23 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `std::borrow::Cow<'_, [u32]>` is not an iterator
[INFO] [stdout]    --> src/btree.rs:216:22
[INFO] [stdout]     |
[INFO] [stdout] 216 |         for sufid in table {
[INFO] [stdout]     |                      ^^^^^ `std::borrow::Cow<'_, [u32]>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::iter::Iterator` is not implemented for `std::borrow::Cow<'_, [u32]>`
[INFO] [stdout]     = note: required by `std::iter::IntoIterator::into_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `std::borrow::Cow<'_, [u32]>` is not an iterator
[INFO] [stdout]    --> src/btree.rs:216:22
[INFO] [stdout]     |
[INFO] [stdout] 216 |         for sufid in table {
[INFO] [stdout]     |                      ^^^^^ `std::borrow::Cow<'_, [u32]>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::iter::Iterator` is not implemented for `std::borrow::Cow<'_, [u32]>`
[INFO] [stdout]     = note: required by `std::iter::IntoIterator::into_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] error: aborting due to 2 previous errors; 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f3cf59b7e161b36e2c85a0cfff20eacc7c75da4c4dc7425323e97e4863b7b5a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3cf59b7e161b36e2c85a0cfff20eacc7c75da4c4dc7425323e97e4863b7b5a8", kill_on_drop: false }`
[INFO] [stdout] f3cf59b7e161b36e2c85a0cfff20eacc7c75da4c4dc7425323e97e4863b7b5a8
