[INFO] updating cached repository Craig-Macomber/exist
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Craig-Macomber/exist
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Craig-Macomber/exist" "work/ex/beta-1.37-6/sources/1.36.0/gh/Craig-Macomber/exist"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Craig-Macomber/exist'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Craig-Macomber/exist" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Craig-Macomber/exist"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Craig-Macomber/exist'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 139a0bf6d1efdafdc8d4226edc21b6f8a99808eb
[INFO] sha for GitHub repo Craig-Macomber/exist: 139a0bf6d1efdafdc8d4226edc21b6f8a99808eb
[INFO] validating manifest of Craig-Macomber/exist on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Craig-Macomber/exist on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Craig-Macomber/exist
[INFO] finished frobbing Craig-Macomber/exist
[INFO] frobbed toml for Craig-Macomber/exist written to work/ex/beta-1.37-6/sources/1.36.0/gh/Craig-Macomber/exist/Cargo.toml
[INFO] started frobbing Craig-Macomber/exist
[INFO] finished frobbing Craig-Macomber/exist
[INFO] frobbed toml for Craig-Macomber/exist written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Craig-Macomber/exist/Cargo.toml
[INFO] crate Craig-Macomber/exist already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Craig-Macomber/exist against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Craig-Macomber/exist:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] c8ff8f6fa6c0803bddf257e6b0834469a55ab4a8270a7c7302c59275cbccb0b5
[INFO] running `"docker" "start" "-a" "c8ff8f6fa6c0803bddf257e6b0834469a55ab4a8270a7c7302c59275cbccb0b5"`
[INFO] [stderr]    Compiling serde v1.0.83
[INFO] [stderr]    Compiling subtle v1.0.0
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling opaque-debug v0.2.1
[INFO] [stderr]    Compiling byte-tools v0.3.0
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling crypto-mac v0.7.0
[INFO] [stderr]    Compiling blake2 v0.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.83
[INFO] [stderr]    Compiling serde_cbor v0.9.0
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.34
[INFO] [stderr]    Compiling exist v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: ambiguous associated item
[INFO] [stderr]   --> src/data_models/leaf_tree.rs:34:37
[INFO] [stderr]    |
[INFO] [stderr] 34 |         fn visit<V: Visitor<Value = Self::Value>>(&self, v: &mut V) {
[INFO] [stderr]    |                                     ^^^^^^^^^^^ help: use fully-qualified syntax: `<data_models::leaf_tree::concrete::Concrete<Value> as Trait>::Value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(ambiguous_associated_items)] on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stderr] note: `Value` could refer to variant defined here
[INFO] [stderr]   --> src/data_models/leaf_tree.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Value(V),
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] note: `Value` could also refer to associated type defined here
[INFO] [stderr]   --> src/data_models/mod.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 |             $(type $Items;)*
[INFO] [stderr]    |               ^^^^^^^^^^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/data_models/leaf_tree.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | Visitable!(View, Visitor, Value);
[INFO] [stderr]    | --------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `BYTE_PATTERN_TEMPLATE_MARKER`
[INFO] [stderr]   --> src/prefix_encoding.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | const BYTE_PATTERN_TEMPLATE_MARKER: u8 = 2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TREE_TEMPLATE_MARKER`
[INFO] [stderr]   --> src/prefix_encoding.rs:95:1
[INFO] [stderr]    |
[INFO] [stderr] 95 | const TREE_TEMPLATE_MARKER: u8 = 3;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TEMPLATE_USE_SEQUENCE_MARKER`
[INFO] [stderr]    --> src/prefix_encoding.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | const TEMPLATE_USE_SEQUENCE_MARKER: u8 = 5;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Shape`
[INFO] [stderr]    --> src/prefix_encoding.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | struct Shape {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_shape`
[INFO] [stderr]    --> src/prefix_encoding.rs:180:1
[INFO] [stderr]     |
[INFO] [stderr] 180 | fn get_shape<TView: View<Value = u8>>(view: TView) -> Shape {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ShapeState`
[INFO] [stderr]    --> src/prefix_encoding.rs:204:1
[INFO] [stderr]     |
[INFO] [stderr] 204 | struct ShapeState {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `size`
[INFO] [stderr]  --> src/leaf_tree_template.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     size: u32,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `offset`
[INFO] [stderr]   --> src/leaf_tree_template.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     offset: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: ambiguous associated item
[INFO] [stderr]   --> src/data_models/leaf_tree.rs:34:37
[INFO] [stderr]    |
[INFO] [stderr] 34 |         fn visit<V: Visitor<Value = Self::Value>>(&self, v: &mut V) {
[INFO] [stderr]    |                                     ^^^^^^^^^^^ help: use fully-qualified syntax: `<data_models::leaf_tree::concrete::Concrete<Value> as Trait>::Value`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stderr] note: `Value` could refer to variant defined here
[INFO] [stderr]   --> src/data_models/leaf_tree.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Value(V),
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] note: `Value` could also refer to associated type defined here
[INFO] [stderr]   --> src/data_models/mod.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 |             $(type $Items;)*
[INFO] [stderr]    |               ^^^^^^^^^^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/data_models/leaf_tree.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | Visitable!(View, Visitor, Value);
[INFO] [stderr]    | --------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.81s
[INFO] running `"docker" "inspect" "c8ff8f6fa6c0803bddf257e6b0834469a55ab4a8270a7c7302c59275cbccb0b5"`
[INFO] running `"docker" "rm" "-f" "c8ff8f6fa6c0803bddf257e6b0834469a55ab4a8270a7c7302c59275cbccb0b5"`
[INFO] [stdout] c8ff8f6fa6c0803bddf257e6b0834469a55ab4a8270a7c7302c59275cbccb0b5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Craig-Macomber/exist:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0511bb01740423c843e4a0b7928c7affa9ff7def1fdf236889a3d43710afabc6
[INFO] running `"docker" "start" "-a" "0511bb01740423c843e4a0b7928c7affa9ff7def1fdf236889a3d43710afabc6"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling exist v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: ambiguous associated item
[INFO] [stderr]   --> src/data_models/leaf_tree.rs:34:37
[INFO] [stderr]    |
[INFO] [stderr] 34 |         fn visit<V: Visitor<Value = Self::Value>>(&self, v: &mut V) {
[INFO] [stderr]    |                                     ^^^^^^^^^^^ help: use fully-qualified syntax: `<data_models::leaf_tree::concrete::Concrete<Value> as Trait>::Value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(ambiguous_associated_items)] on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stderr] note: `Value` could refer to variant defined here
[INFO] [stderr]   --> src/data_models/leaf_tree.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Value(V),
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] note: `Value` could also refer to associated type defined here
[INFO] [stderr]   --> src/data_models/mod.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 |             $(type $Items;)*
[INFO] [stderr]    |               ^^^^^^^^^^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/data_models/leaf_tree.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | Visitable!(View, Visitor, Value);
[INFO] [stderr]    | --------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `BYTE_PATTERN_TEMPLATE_MARKER`
[INFO] [stderr]   --> src/prefix_encoding.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | const BYTE_PATTERN_TEMPLATE_MARKER: u8 = 2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TREE_TEMPLATE_MARKER`
[INFO] [stderr]   --> src/prefix_encoding.rs:95:1
[INFO] [stderr]    |
[INFO] [stderr] 95 | const TREE_TEMPLATE_MARKER: u8 = 3;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TEMPLATE_USE_SEQUENCE_MARKER`
[INFO] [stderr]    --> src/prefix_encoding.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | const TEMPLATE_USE_SEQUENCE_MARKER: u8 = 5;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Shape`
[INFO] [stderr]    --> src/prefix_encoding.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | struct Shape {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_shape`
[INFO] [stderr]    --> src/prefix_encoding.rs:180:1
[INFO] [stderr]     |
[INFO] [stderr] 180 | fn get_shape<TView: View<Value = u8>>(view: TView) -> Shape {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ShapeState`
[INFO] [stderr]    --> src/prefix_encoding.rs:204:1
[INFO] [stderr]     |
[INFO] [stderr] 204 | struct ShapeState {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `size`
[INFO] [stderr]  --> src/leaf_tree_template.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     size: u32,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `offset`
[INFO] [stderr]   --> src/leaf_tree_template.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     offset: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: ambiguous associated item
[INFO] [stderr]   --> src/data_models/leaf_tree.rs:34:37
[INFO] [stderr]    |
[INFO] [stderr] 34 |         fn visit<V: Visitor<Value = Self::Value>>(&self, v: &mut V) {
[INFO] [stderr]    |                                     ^^^^^^^^^^^ help: use fully-qualified syntax: `<data_models::leaf_tree::concrete::Concrete<Value> as Trait>::Value`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #57644 <https://github.com/rust-lang/rust/issues/57644>
[INFO] [stderr] note: `Value` could refer to variant defined here
[INFO] [stderr]   --> src/data_models/leaf_tree.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Value(V),
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] note: `Value` could also refer to associated type defined here
[INFO] [stderr]   --> src/data_models/mod.rs:14:15
[INFO] [stderr]    |
[INFO] [stderr] 14 |             $(type $Items;)*
[INFO] [stderr]    |               ^^^^^^^^^^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/data_models/leaf_tree.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | Visitable!(View, Visitor, Value);
[INFO] [stderr]    | --------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `"docker" "inspect" "0511bb01740423c843e4a0b7928c7affa9ff7def1fdf236889a3d43710afabc6"`
[INFO] running `"docker" "rm" "-f" "0511bb01740423c843e4a0b7928c7affa9ff7def1fdf236889a3d43710afabc6"`
[INFO] [stdout] 0511bb01740423c843e4a0b7928c7affa9ff7def1fdf236889a3d43710afabc6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Craig-Macomber/exist:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] dbc66b9b96bd34bd82bb648dc3c56b88e29386e81a8c25ca1f3f274f287326be
[INFO] running `"docker" "start" "-a" "dbc66b9b96bd34bd82bb648dc3c56b88e29386e81a8c25ca1f3f274f287326be"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/exist-a314860e817a661b
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::encode_list ... ok
[INFO] [stdout] test tests::encode_empty ... ok
[INFO] [stdout] test data_models::typed_value_tree::concrete::tests::test_view_to_concrete ... ok
[INFO] [stdout] test tests::encode_list_dup ... ok
[INFO] [stdout] test tests::encode_value ... ok
[INFO] [stdout] test tests::encode_list2 ... ok
[INFO] [stdout] test tests::encode_list_dup2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "dbc66b9b96bd34bd82bb648dc3c56b88e29386e81a8c25ca1f3f274f287326be"`
[INFO] running `"docker" "rm" "-f" "dbc66b9b96bd34bd82bb648dc3c56b88e29386e81a8c25ca1f3f274f287326be"`
[INFO] [stdout] dbc66b9b96bd34bd82bb648dc3c56b88e29386e81a8c25ca1f3f274f287326be