[INFO] fetching crate sufdb 0.1.7...
[INFO] testing sufdb-0.1.7 against 1.54.0 for beta-1.55-1
[INFO] extracting crate sufdb 0.1.7 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate sufdb 0.1.7 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c095ef6440cc1ece01c077c81750e9745ed9ec548987606fc3b65a7a6b0a17e
[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" "5c095ef6440cc1ece01c077c81750e9745ed9ec548987606fc3b65a7a6b0a17e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c095ef6440cc1ece01c077c81750e9745ed9ec548987606fc3b65a7a6b0a17e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c095ef6440cc1ece01c077c81750e9745ed9ec548987606fc3b65a7a6b0a17e", kill_on_drop: false }`
[INFO] [stdout] 5c095ef6440cc1ece01c077c81750e9745ed9ec548987606fc3b65a7a6b0a17e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 002ff5c819f02631d1759d26167a5f74e2a53d18c71a8c4f2125d78bfa3f938c
[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" "002ff5c819f02631d1759d26167a5f74e2a53d18c71a8c4f2125d78bfa3f938c", kill_on_drop: false }`
[INFO] [stderr]    Compiling suffix v1.2.0
[INFO] [stderr]    Compiling sufdb v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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: 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] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `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 the macro `w` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `Cow<'_, [u32]>` is not an iterator
[INFO] [stdout]    --> src/btree.rs:216:22
[INFO] [stdout]     |
[INFO] [stdout] 216 |         for sufid in table {
[INFO] [stdout]     |                      ^^^^^ `Cow<'_, [u32]>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Iterator` is not implemented for `Cow<'_, [u32]>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `IntoIterator` for `Cow<'_, [u32]>`
[INFO] [stdout]     = note: required by `into_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[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: could not compile `sufdb`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "002ff5c819f02631d1759d26167a5f74e2a53d18c71a8c4f2125d78bfa3f938c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "002ff5c819f02631d1759d26167a5f74e2a53d18c71a8c4f2125d78bfa3f938c", kill_on_drop: false }`
[INFO] [stdout] 002ff5c819f02631d1759d26167a5f74e2a53d18c71a8c4f2125d78bfa3f938c
