[INFO] crate lifeguard 0.6.0 is already in cache
[INFO] extracting crate lifeguard 0.6.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/lifeguard/0.6.0
[INFO] extracting crate lifeguard 0.6.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/lifeguard/0.6.0
[INFO] validating manifest of lifeguard-0.6.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lifeguard-0.6.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lifeguard-0.6.0
[INFO] finished frobbing lifeguard-0.6.0
[INFO] frobbed toml for lifeguard-0.6.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/lifeguard/0.6.0/Cargo.toml
[INFO] started frobbing lifeguard-0.6.0
[INFO] finished frobbing lifeguard-0.6.0
[INFO] frobbed toml for lifeguard-0.6.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/lifeguard/0.6.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing lifeguard-0.6.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/lifeguard/0.6.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] bfbc3685aa8dacbbcaf4e6d61d32cfa0ca04273d03dff7d22656edc34de649f1
[INFO] running `"docker" "start" "-a" "bfbc3685aa8dacbbcaf4e6d61d32cfa0ca04273d03dff7d22656edc34de649f1"`
[INFO] [stderr]    Compiling lifeguard v0.6.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:358:17
[INFO] [stderr]     |
[INFO] [stderr] 358 |   supplier: Box<Supply<Output=T>>
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Supply<Output=T>`
[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/lib.rs:363:32
[INFO] [stderr]     |
[INFO] [stderr] 363 |   pub fn new(mut supplier: Box<Supply<Output=T>>, starting_size: usize, max_size: usize) -> CappedCollection<T> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Supply<Output=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:564:28
[INFO] [stderr]     |
[INFO] [stderr] 564 |   pub supplier: Option<Box<Supply<Output=T>>>,
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Supply<Output=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:621:57
[INFO] [stderr]     |
[INFO] [stderr] 621 |       builder.supplier = Some(Box::new(supplier) as Box<Supply<Output=T>>);
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Supply<Output=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/lib.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn new(pool: $pool, value: T) -> $typ {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 186 | impl_recycled!{ RcRecycled, RcRecycled<T>, Rc<RefCell<CappedCollection<T>>> }
[INFO] [stderr]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_from`
[INFO] [stderr]    --> src/lib.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn new_from<A>(pool: $pool, value: T, source: A) -> $typ where T : InitializeWith<A> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 186 | impl_recycled!{ RcRecycled, RcRecycled<T>, Rc<RefCell<CappedCollection<T>>> }
[INFO] [stderr]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/lib.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn new(pool: $pool, value: T) -> $typ {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_recycled!{ Recycled, Recycled<'a, T>, &'a RefCell<CappedCollection<T>> }
[INFO] [stderr]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_from`
[INFO] [stderr]    --> src/lib.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn new_from<A>(pool: $pool, value: T, source: A) -> $typ where T : InitializeWith<A> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_recycled!{ Recycled, Recycled<'a, T>, &'a RefCell<CappedCollection<T>> }
[INFO] [stderr]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "bfbc3685aa8dacbbcaf4e6d61d32cfa0ca04273d03dff7d22656edc34de649f1"`
[INFO] running `"docker" "rm" "-f" "bfbc3685aa8dacbbcaf4e6d61d32cfa0ca04273d03dff7d22656edc34de649f1"`
[INFO] [stdout] bfbc3685aa8dacbbcaf4e6d61d32cfa0ca04273d03dff7d22656edc34de649f1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/lifeguard/0.6.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 94a5890dbd360cee7be222be53fab35f9f0dc08659c155b39f6e7a077560004b
[INFO] running `"docker" "start" "-a" "94a5890dbd360cee7be222be53fab35f9f0dc08659c155b39f6e7a077560004b"`
[INFO] [stderr]    Compiling lifeguard v0.6.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:358:17
[INFO] [stderr]     |
[INFO] [stderr] 358 |   supplier: Box<Supply<Output=T>>
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Supply<Output=T>`
[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/lib.rs:363:32
[INFO] [stderr]     |
[INFO] [stderr] 363 |   pub fn new(mut supplier: Box<Supply<Output=T>>, starting_size: usize, max_size: usize) -> CappedCollection<T> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Supply<Output=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:564:28
[INFO] [stderr]     |
[INFO] [stderr] 564 |   pub supplier: Option<Box<Supply<Output=T>>>,
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Supply<Output=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:621:57
[INFO] [stderr]     |
[INFO] [stderr] 621 |       builder.supplier = Some(Box::new(supplier) as Box<Supply<Output=T>>);
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Supply<Output=T>`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/lib.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn new(pool: $pool, value: T) -> $typ {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 186 | impl_recycled!{ RcRecycled, RcRecycled<T>, Rc<RefCell<CappedCollection<T>>> }
[INFO] [stderr]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_from`
[INFO] [stderr]    --> src/lib.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn new_from<A>(pool: $pool, value: T, source: A) -> $typ where T : InitializeWith<A> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 186 | impl_recycled!{ RcRecycled, RcRecycled<T>, Rc<RefCell<CappedCollection<T>>> }
[INFO] [stderr]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/lib.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     fn new(pool: $pool, value: T) -> $typ {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_recycled!{ Recycled, Recycled<'a, T>, &'a RefCell<CappedCollection<T>> }
[INFO] [stderr]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_from`
[INFO] [stderr]    --> src/lib.rs:173:5
[INFO] [stderr]     |
[INFO] [stderr] 173 |     fn new_from<A>(pool: $pool, value: T, source: A) -> $typ where T : InitializeWith<A> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_recycled!{ Recycled, Recycled<'a, T>, &'a RefCell<CappedCollection<T>> }
[INFO] [stderr]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.02s
[INFO] running `"docker" "inspect" "94a5890dbd360cee7be222be53fab35f9f0dc08659c155b39f6e7a077560004b"`
[INFO] running `"docker" "rm" "-f" "94a5890dbd360cee7be222be53fab35f9f0dc08659c155b39f6e7a077560004b"`
[INFO] [stdout] 94a5890dbd360cee7be222be53fab35f9f0dc08659c155b39f6e7a077560004b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/lifeguard/0.6.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 5bfb6d936c61fc29263f9a41d0158da26eef7a0cbbb65e87277730fef2aa4b8e
[INFO] running `"docker" "start" "-a" "5bfb6d936c61fc29263f9a41d0158da26eef7a0cbbb65e87277730fef2aa4b8e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lifeguard-ef3cdc2992853eed
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lib-44f5cb5112ca5c37
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test tests::test_as_ref ... ok
[INFO] [stdout] test tests::test_as_mut ... ok
[INFO] [stdout] test tests::test_as_mut_rc ... ok
[INFO] [stdout] test tests::test_deref_mut_rc ... ok
[INFO] [stdout] test tests::test_deref_mut ... ok
[INFO] [stdout] test tests::test_clone ... ok
[INFO] [stdout] test tests::test_deref_rc ... ok
[INFO] [stdout] test tests::test_attach_rc ... ok
[INFO] [stdout] test tests::test_builder ... ok
[INFO] [stdout] test tests::test_attach ... ok
[INFO] [stdout] test tests::test_recycle ... ok
[INFO] [stdout] test tests::test_recycle_rc ... ok
[INFO] [stdout] test tests::test_rc_clone ... ok
[INFO] [stdout] test tests::test_detach_rc ... ok
[INFO] [stdout] test tests::test_size_cap ... ok
[INFO] [stdout] test tests::test_detach ... ok
[INFO] [stdout] test tests::test_new_from_iter ... ok
[INFO] [stdout] test tests::test_deref ... ok
[INFO] [stdout] test tests::test_as_ref_rc ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lifeguard
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - pool (line 539) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "5bfb6d936c61fc29263f9a41d0158da26eef7a0cbbb65e87277730fef2aa4b8e"`
[INFO] running `"docker" "rm" "-f" "5bfb6d936c61fc29263f9a41d0158da26eef7a0cbbb65e87277730fef2aa4b8e"`
[INFO] [stdout] 5bfb6d936c61fc29263f9a41d0158da26eef7a0cbbb65e87277730fef2aa4b8e