[INFO] crate skiplist 0.2.10 is already in cache
[INFO] testing skiplist-0.2.10 against 1.38.0 for beta-1.39-1
[INFO] extracting crate skiplist 0.2.10 into work/builds/worker-11/source
[INFO] validating manifest of crates.io crate skiplist 0.2.10 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate skiplist 0.2.10
[INFO] finished tweaking crates.io crate skiplist 0.2.10
[INFO] tweaked toml for crates.io crate skiplist 0.2.10 written to work/builds/worker-11/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/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=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] bb5b6c491400cf32da802f9422e96f4f16ac9c031494ccd39448372818fed7af
[INFO] running `"docker" "start" "-a" "bb5b6c491400cf32da802f9422e96f4f16ac9c031494ccd39448372818fed7af"`
[INFO] [stderr]    Compiling skiplist v0.2.10 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ordered_skiplist.rs:47:18
[INFO] [stderr]    |
[INFO] [stderr] 47 |     compare: Box<Fn(&T, &T) -> Ordering>,
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T, &T) -> Ordering`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ordered_skiplist.rs:84:24
[INFO] [stderr]    |
[INFO] [stderr] 84 |             })) as Box<Fn(&T, &T) -> Ordering>,
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T, &T) -> Ordering`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ordered_skiplist.rs:118:24
[INFO] [stderr]     |
[INFO] [stderr] 118 |             })) as Box<Fn(&T, &T) -> Ordering>,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T, &T) -> Ordering`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "bb5b6c491400cf32da802f9422e96f4f16ac9c031494ccd39448372818fed7af"`
[INFO] running `"docker" "rm" "-f" "bb5b6c491400cf32da802f9422e96f4f16ac9c031494ccd39448372818fed7af"`
[INFO] [stdout] bb5b6c491400cf32da802f9422e96f4f16ac9c031494ccd39448372818fed7af
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/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=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] de07b470a4b6899014684dac97ec3ab42cc480c40fc05c4cba7ad79bb3113254
[INFO] running `"docker" "start" "-a" "de07b470a4b6899014684dac97ec3ab42cc480c40fc05c4cba7ad79bb3113254"`
[INFO] [stderr]    Compiling skiplist v0.2.10 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:27:19
[INFO] [stderr]    |
[INFO] [stderr] 27 | #![cfg_attr(test, feature(test, collections_bound))]
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ordered_skiplist.rs:47:18
[INFO] [stderr]    |
[INFO] [stderr] 47 |     compare: Box<Fn(&T, &T) -> Ordering>,
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T, &T) -> Ordering`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ordered_skiplist.rs:84:24
[INFO] [stderr]    |
[INFO] [stderr] 84 |             })) as Box<Fn(&T, &T) -> Ordering>,
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T, &T) -> Ordering`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ordered_skiplist.rs:118:24
[INFO] [stderr]     |
[INFO] [stderr] 118 |             })) as Box<Fn(&T, &T) -> Ordering>,
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T, &T) -> Ordering`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `ordered_skiplist::OrderedSkipList<{integer}>` in the current scope
[INFO] [stderr]     --> src/ordered_skiplist.rs:1733:27
[INFO] [stderr]      |
[INFO] [stderr] 42   | pub struct OrderedSkipList<T> {
[INFO] [stderr]      | ----------------------------- method `range` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 1733 |         for (&v, i) in sl.range(Included(&2), Unbounded).zip(2..size) {
[INFO] [stderr]      |                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `&ordered_skiplist::OrderedSkipList<u32>` in the current scope
[INFO] [stderr]     --> src/ordered_skiplist.rs:1746:33
[INFO] [stderr]      |
[INFO] [stderr] 1746 |             let mut values = sl.range(min, max).map(|&i| i);
[INFO] [stderr]      |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `ordered_skiplist::OrderedSkipList<{integer}>` in the current scope
[INFO] [stderr]     --> src/ordered_skiplist.rs:1770:37
[INFO] [stderr]      |
[INFO] [stderr] 42   | pub struct OrderedSkipList<T> {
[INFO] [stderr]      | ----------------------------- method `range` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 1770 |                 let mut values = sl.range(Included(&i), Included(&j)).map(|&i| i);
[INFO] [stderr]      |                                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `skipmap::SkipMap<{integer}, {integer}>` in the current scope
[INFO] [stderr]     --> src/skipmap.rs:1851:33
[INFO] [stderr]      |
[INFO] [stderr] 125  | pub struct SkipMap<K, V> {
[INFO] [stderr]      | ------------------------ method `range` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 1851 |         for ((&k, &v), i) in sm.range(Included(&2), Unbounded).zip(2..size) {
[INFO] [stderr]      |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `&skipmap::SkipMap<u32, u32>` in the current scope
[INFO] [stderr]     --> src/skipmap.rs:1865:33
[INFO] [stderr]      |
[INFO] [stderr] 1865 |             let mut values = sm.range(min, max).map(|(&a, &b)| (a, b));
[INFO] [stderr]      |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `skipmap::SkipMap<{integer}, {integer}>` in the current scope
[INFO] [stderr]     --> src/skipmap.rs:1890:37
[INFO] [stderr]      |
[INFO] [stderr] 125  | pub struct SkipMap<K, V> {
[INFO] [stderr]      | ------------------------ method `range` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 1890 |                 let mut values = sm.range(Included(&i), Included(&j)).map(|(&a, &b)| (a, b));
[INFO] [stderr]      |                                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `skiplist::SkipList<{integer}>` in the current scope
[INFO] [stderr]     --> src/skiplist.rs:1529:27
[INFO] [stderr]      |
[INFO] [stderr] 25   | pub struct SkipList<T> {
[INFO] [stderr]      | ---------------------- method `range` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 1529 |         for (&v, i) in sl.range(Included(2), Unbounded).zip(2..size) {
[INFO] [stderr]      |                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `&skiplist::SkipList<usize>` in the current scope
[INFO] [stderr]     --> src/skiplist.rs:1542:33
[INFO] [stderr]      |
[INFO] [stderr] 1542 |             let mut values = sl.range(min, max).map(|&i| i);
[INFO] [stderr]      |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `skiplist::SkipList<{integer}>` in the current scope
[INFO] [stderr]     --> src/skiplist.rs:1566:37
[INFO] [stderr]      |
[INFO] [stderr] 25   | pub struct SkipList<T> {
[INFO] [stderr]      | ---------------------- method `range` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 1566 |                 let mut values = sl.range(Included(i), Included(j)).map(|&i| i);
[INFO] [stderr]      |                                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `range` found for type `skiplist::SkipList<{integer}>` in the current scope
[INFO] [stderr]     --> src/skiplist.rs:1579:37
[INFO] [stderr]      |
[INFO] [stderr] 25   | pub struct SkipList<T> {
[INFO] [stderr]      | ---------------------- method `range` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 1579 |                 let mut values = sl.range(Included(i), Included(j)).rev().map(|&i| i);
[INFO] [stderr]      |                                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 11 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `skiplist`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "de07b470a4b6899014684dac97ec3ab42cc480c40fc05c4cba7ad79bb3113254"`
[INFO] running `"docker" "rm" "-f" "de07b470a4b6899014684dac97ec3ab42cc480c40fc05c4cba7ad79bb3113254"`
[INFO] [stdout] de07b470a4b6899014684dac97ec3ab42cc480c40fc05c4cba7ad79bb3113254