[INFO] crate reffers 0.5.1 is already in cache
[INFO] testing reffers-0.5.1 against 1.38.0 for beta-1.39-1
[INFO] extracting crate reffers 0.5.1 into work/builds/worker-10/source
[INFO] validating manifest of crates.io crate reffers 0.5.1 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 reffers 0.5.1
[INFO] finished tweaking crates.io crate reffers 0.5.1
[INFO] tweaked toml for crates.io crate reffers 0.5.1 written to work/builds/worker-10/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-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/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] 3c6ee48a2506316e43073eea85415230642a2bc226cc1377048e6ab3f49a7199
[INFO] running `"docker" "start" "-a" "3c6ee48a2506316e43073eea85415230642a2bc226cc1377048e6ab3f49a7199"`
[INFO] [stderr]    Compiling reffers v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | / /// Using u8 will allow for a maximum of four Ref, four Strong and four Weak.
[INFO] [stderr] 177 | | ///
[INFO] [stderr] 178 | | /// That's not much, maybe you want to implement your own wrapper type instead. 
[INFO] [stderr]     | |________________________________________________________________________________^
[INFO] [stderr] 179 |   rc_bit_mask_internal!(primitive, u8, 2, 2, 2);
[INFO] [stderr]     |   ---------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:181:1
[INFO] [stderr]     |
[INFO] [stderr] 181 | /// Using u16 will allow for a maximum of 32 Ref, 16 Strong and 32 Weak.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 182 | rc_bit_mask_internal!(primitive, u16, 5, 4, 5);
[INFO] [stderr]     | ----------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:184:1
[INFO] [stderr]     |
[INFO] [stderr] 184 | /// Using u32 will allow for a maximum of 1024 Ref, 1024 Strong and 1024 Weak.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 185 | rc_bit_mask_internal!(primitive, u32, 10, 10, 10);
[INFO] [stderr]     | -------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:187:1
[INFO] [stderr]     |
[INFO] [stderr] 187 | /// Usize defaults to same as u32.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 188 | rc_bit_mask_internal!(primitive, usize, 10, 10, 10);
[INFO] [stderr]     | ---------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:190:1
[INFO] [stderr]     |
[INFO] [stderr] 190 | /// Using u64 will allow for a maximum of 2097152 Ref, 1048576 Strong and 2097152 Weak.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 191 | rc_bit_mask_internal!(primitive, u64, 21, 20, 21);
[INFO] [stderr]     | -------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:193:1
[INFO] [stderr]     |
[INFO] [stderr] 193 | /// Using u128 will give you 42 bits of Ref, Strong and Weak.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 194 | rc_bit_mask_internal!(primitive, u128, 42, 42, 42);
[INFO] [stderr]     | --------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/rc.rs:130:35
[INFO] [stderr]     |
[INFO] [stderr] 130 |         write!(f, "{}", (self as &error::Error).description())
[INFO] [stderr]     |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Default` is imported redundantly
[INFO] [stderr]    --> src/rc.rs:163:13
[INFO] [stderr]     |
[INFO] [stderr] 163 |         use std::default::Default; 
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "3c6ee48a2506316e43073eea85415230642a2bc226cc1377048e6ab3f49a7199"`
[INFO] running `"docker" "rm" "-f" "3c6ee48a2506316e43073eea85415230642a2bc226cc1377048e6ab3f49a7199"`
[INFO] [stdout] 3c6ee48a2506316e43073eea85415230642a2bc226cc1377048e6ab3f49a7199
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/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] bf259f72aaede9a5ba2d8d351e162a8d08722e0955af6ba74d8d619a0674660d
[INFO] running `"docker" "start" "-a" "bf259f72aaede9a5ba2d8d351e162a8d08722e0955af6ba74d8d619a0674660d"`
[INFO] [stderr]    Compiling reffers v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | / /// Using u8 will allow for a maximum of four Ref, four Strong and four Weak.
[INFO] [stderr] 177 | | ///
[INFO] [stderr] 178 | | /// That's not much, maybe you want to implement your own wrapper type instead. 
[INFO] [stderr]     | |________________________________________________________________________________^
[INFO] [stderr] 179 |   rc_bit_mask_internal!(primitive, u8, 2, 2, 2);
[INFO] [stderr]     |   ---------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:181:1
[INFO] [stderr]     |
[INFO] [stderr] 181 | /// Using u16 will allow for a maximum of 32 Ref, 16 Strong and 32 Weak.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 182 | rc_bit_mask_internal!(primitive, u16, 5, 4, 5);
[INFO] [stderr]     | ----------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:184:1
[INFO] [stderr]     |
[INFO] [stderr] 184 | /// Using u32 will allow for a maximum of 1024 Ref, 1024 Strong and 1024 Weak.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 185 | rc_bit_mask_internal!(primitive, u32, 10, 10, 10);
[INFO] [stderr]     | -------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:187:1
[INFO] [stderr]     |
[INFO] [stderr] 187 | /// Usize defaults to same as u32.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 188 | rc_bit_mask_internal!(primitive, usize, 10, 10, 10);
[INFO] [stderr]     | ---------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:190:1
[INFO] [stderr]     |
[INFO] [stderr] 190 | /// Using u64 will allow for a maximum of 2097152 Ref, 1048576 Strong and 2097152 Weak.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 191 | rc_bit_mask_internal!(primitive, u64, 21, 20, 21);
[INFO] [stderr]     | -------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/rc_bitmask.rs:193:1
[INFO] [stderr]     |
[INFO] [stderr] 193 | /// Using u128 will give you 42 bits of Ref, Strong and Weak.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 194 | rc_bit_mask_internal!(primitive, u128, 42, 42, 42);
[INFO] [stderr]     | --------------------------------------------------- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/rmba.rs:253:21
[INFO] [stderr]     |
[INFO] [stderr] 253 |     let z: SlowRMBA<Dummy> = SlowRMBA::Box(Box::new(9u8));
[INFO] [stderr]     |                     ^^^^^ help: use `dyn`: `dyn Dummy`
[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/rmba.rs:254:17
[INFO] [stderr]     |
[INFO] [stderr] 254 |     let r: RMBA<Dummy> = (Box::new(9i32) as Box<Dummy>).into();
[INFO] [stderr]     |                 ^^^^^ help: use `dyn`: `dyn Dummy`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/rmba.rs:254:49
[INFO] [stderr]     |
[INFO] [stderr] 254 |     let r: RMBA<Dummy> = (Box::new(9i32) as Box<Dummy>).into();
[INFO] [stderr]     |                                                 ^^^^^ help: use `dyn`: `dyn Dummy`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/rmba.rs:255:17
[INFO] [stderr]     |
[INFO] [stderr] 255 |     let a: RMBA<Dummy> = (Arc::new(17i32) as Arc<Dummy>).into();
[INFO] [stderr]     |                 ^^^^^ help: use `dyn`: `dyn Dummy`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/rmba.rs:255:50
[INFO] [stderr]     |
[INFO] [stderr] 255 |     let a: RMBA<Dummy> = (Arc::new(17i32) as Arc<Dummy>).into();
[INFO] [stderr]     |                                                  ^^^^^ help: use `dyn`: `dyn Dummy`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/rc.rs:130:35
[INFO] [stderr]     |
[INFO] [stderr] 130 |         write!(f, "{}", (self as &error::Error).description())
[INFO] [stderr]     |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Default` is imported redundantly
[INFO] [stderr]    --> src/rc.rs:163:13
[INFO] [stderr]     |
[INFO] [stderr] 163 |         use std::default::Default; 
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `"docker" "inspect" "bf259f72aaede9a5ba2d8d351e162a8d08722e0955af6ba74d8d619a0674660d"`
[INFO] running `"docker" "rm" "-f" "bf259f72aaede9a5ba2d8d351e162a8d08722e0955af6ba74d8d619a0674660d"`
[INFO] [stdout] bf259f72aaede9a5ba2d8d351e162a8d08722e0955af6ba74d8d619a0674660d
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/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"`
[INFO] [stdout] d0dde500536dee102dcd2e6d1a6367813cf6e540fa80b100e8aea80aed4276e9
[INFO] running `"docker" "start" "-a" "d0dde500536dee102dcd2e6d1a6367813cf6e540fa80b100e8aea80aed4276e9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/reffers-a3c0fab579cc0a33
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test arc::arc_basic ... ok
[INFO] [stdout] test arc::arc_drop ... ok
[INFO] [stdout] test arc::arc_slice ... ok
[INFO] [stdout] test arc::arc_str ... ok
[INFO] [stdout] test aref::countdown_example ... ok
[INFO] [stdout] test aref::debug_impl ... ok
[INFO] [stdout] test aref::verify_descended_types ... ok
[INFO] [stdout] test aref::verify_drop ... ok
[INFO] [stdout] test rc::rc_drop ... ok
[INFO] [stdout] test arc::arc_send ... ok
[INFO] [stdout] test rc::rc_basic ... ok
[INFO] [stdout] test aref::verify_types ... ok
[INFO] [stdout] test rc::rc_slice ... ok
[INFO] [stdout] test rc::rc_str ... ok
[INFO] [stdout] test rc::rc_hashmap ... ok
[INFO] [stdout] test rmba::rmba_box ... ok
[INFO] [stdout] test rc_bitmask::bitmask ... ok
[INFO] [stdout] test rmba::rmba_arc ... ok
[INFO] [stdout] test rmba::rmba_fat ... ok
[INFO] [stdout] test rmba::rmba_sizes ... ok
[INFO] [stdout] test rmba::rmba_typical ... ok
[INFO] [stdout] test rmba::rmba_unaligned ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests reffers
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test src/rmba.rs - rmba::RMBA (line 60) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARefss::new (line 543) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARefs::new (line 495) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARef::map (line 463) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARefss::map (line 559) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARef::try_map (line 478) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARefs::map (line 511) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARef::new (line 422) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARefs::try_map (line 523) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARef::descend_from (line 376) ... ok
[INFO] [stdout] test src/rc.rs - rc (line 47) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARefss::try_map (line 571) ... ok
[INFO] [stdout] test src/rc_bitmask.rs - rc_bit_mask (line 82) ... ok
[INFO] [stdout] test src/aref.rs - aref::ARef (line 154) ... ok
[INFO] [stdout] test src/arc.rs - arc (line 7) ... ok
[INFO] [stdout] test src/rc.rs - rc::Ref (line 508) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d0dde500536dee102dcd2e6d1a6367813cf6e540fa80b100e8aea80aed4276e9"`
[INFO] running `"docker" "rm" "-f" "d0dde500536dee102dcd2e6d1a6367813cf6e540fa80b100e8aea80aed4276e9"`
[INFO] [stdout] d0dde500536dee102dcd2e6d1a6367813cf6e540fa80b100e8aea80aed4276e9