[INFO] crate wasm_val 0.3.5 is already in cache
[INFO] extracting crate wasm_val 0.3.5 into work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/wasm_val/0.3.5
[INFO] extracting crate wasm_val 0.3.5 into work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/wasm_val/0.3.5
[INFO] validating manifest of wasm_val-0.3.5 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wasm_val-0.3.5 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing wasm_val-0.3.5
[INFO] finished frobbing wasm_val-0.3.5
[INFO] frobbed toml for wasm_val-0.3.5 written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/wasm_val/0.3.5/Cargo.toml
[INFO] started frobbing wasm_val-0.3.5
[INFO] finished frobbing wasm_val-0.3.5
[INFO] frobbed toml for wasm_val-0.3.5 written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/reg/wasm_val/0.3.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking wasm_val-0.3.5 against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-7/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/reg/wasm_val/0.3.5:/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=forbid" "-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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b1369a7644b77af6dca9f0841cf656a26634ab4c68f612aac7c1b594de28a4f8
[INFO] running `"docker" "start" "-a" "b1369a7644b77af6dca9f0841cf656a26634ab4c68f612aac7c1b594de28a4f8"`
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking wasm_val v0.3.5 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:56:34
[INFO] [stderr]    |
[INFO] [stderr] 56 | impl JsSerializable for &'static Fn() -> () {
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> ()`
[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/js_ser/mod.rs:67:34
[INFO] [stderr]    |
[INFO] [stderr] 67 | impl JsSerializable for &'static Fn() -> (Box<JsSerializable>) {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> (Box<JsSerializable>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:67:47
[INFO] [stderr]    |
[INFO] [stderr] 67 | impl JsSerializable for &'static Fn() -> (Box<JsSerializable>) {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:78:34
[INFO] [stderr]    |
[INFO] [stderr] 78 | impl JsSerializable for &'static Fn(JsValue) -> () {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(JsValue) -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:89:34
[INFO] [stderr]    |
[INFO] [stderr] 89 | impl JsSerializable for &'static Fn(JsValue) -> (Box<JsSerializable>) {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(JsValue) -> (Box<JsSerializable>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:89:54
[INFO] [stderr]    |
[INFO] [stderr] 89 | impl JsSerializable for &'static Fn(JsValue) -> (Box<JsSerializable>) {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_val_impl/call.rs:36:43
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn call_with_args(&self, args: &[&JsSerializable]) -> Option<JsValue> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_val_impl/call.rs:78:62
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn call_method_with_args(&self, name: &str, args: &[&JsSerializable]) -> Option<JsValue> {
[INFO] [stderr]    |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_val_impl/new.rs:36:42
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new_with_args(&self, args: &[&JsSerializable]) -> Option<JsValue> {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_val_impl/mod.rs:64:33
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn ser_single_val(val: &JsSerializable) -> Vec<u8> {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:52:72
[INFO] [stderr]    |
[INFO] [stderr] 52 |     static CALLBACKS_RET_KEY: RefCell<HashMap<u32, Rc<dyn Fn() -> (Box<JsSerializable>) >>> = RefCell::new(HashMap::new());
[INFO] [stderr]    |                                                                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:54:83
[INFO] [stderr]    |
[INFO] [stderr] 54 |     static CALLBACKS_ARG_RET_KEY: RefCell<HashMap<u32, Rc<dyn Fn(JsValue) -> (Box<JsSerializable>) >>> = RefCell::new(HashMap::new());
[INFO] [stderr]    |                                                                                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:130:42
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn register_callback(callback:  &'static Fn() -> ()) -> u32  {
[INFO] [stderr]     |                                          ^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:139:45
[INFO] [stderr]     |
[INFO] [stderr] 139 | fn register_callback_ret(callback: &'static Fn() -> (Box<JsSerializable>)) -> u32  {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> (Box<JsSerializable>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:139:58
[INFO] [stderr]     |
[INFO] [stderr] 139 | fn register_callback_ret(callback: &'static Fn() -> (Box<JsSerializable>)) -> u32  {
[INFO] [stderr]     |                                                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:148:46
[INFO] [stderr]     |
[INFO] [stderr] 148 | fn register_callback_arg(callback:  &'static Fn(JsValue) -> ()) -> u32  {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(JsValue) -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:157:50
[INFO] [stderr]     |
[INFO] [stderr] 157 | fn register_callback_ret_arg(callback:  &'static Fn(JsValue) -> (Box<JsSerializable>)) -> u32  {
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(JsValue) -> (Box<JsSerializable>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:157:70
[INFO] [stderr]     |
[INFO] [stderr] 157 | fn register_callback_ret_arg(callback:  &'static Fn(JsValue) -> (Box<JsSerializable>)) -> u32  {
[INFO] [stderr]     |                                                                      ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:56:34
[INFO] [stderr]    |
[INFO] [stderr] 56 | impl JsSerializable for &'static Fn() -> () {
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> ()`
[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/js_ser/mod.rs:67:34
[INFO] [stderr]    |
[INFO] [stderr] 67 | impl JsSerializable for &'static Fn() -> (Box<JsSerializable>) {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> (Box<JsSerializable>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:67:47
[INFO] [stderr]    |
[INFO] [stderr] 67 | impl JsSerializable for &'static Fn() -> (Box<JsSerializable>) {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:78:34
[INFO] [stderr]    |
[INFO] [stderr] 78 | impl JsSerializable for &'static Fn(JsValue) -> () {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(JsValue) -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:89:34
[INFO] [stderr]    |
[INFO] [stderr] 89 | impl JsSerializable for &'static Fn(JsValue) -> (Box<JsSerializable>) {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(JsValue) -> (Box<JsSerializable>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_ser/mod.rs:89:54
[INFO] [stderr]    |
[INFO] [stderr] 89 | impl JsSerializable for &'static Fn(JsValue) -> (Box<JsSerializable>) {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_val_impl/call.rs:36:43
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn call_with_args(&self, args: &[&JsSerializable]) -> Option<JsValue> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_val_impl/call.rs:78:62
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn call_method_with_args(&self, name: &str, args: &[&JsSerializable]) -> Option<JsValue> {
[INFO] [stderr]    |                                                              ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_val_impl/new.rs:36:42
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new_with_args(&self, args: &[&JsSerializable]) -> Option<JsValue> {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/js_val_impl/mod.rs:64:33
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn ser_single_val(val: &JsSerializable) -> Vec<u8> {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:52:72
[INFO] [stderr]    |
[INFO] [stderr] 52 |     static CALLBACKS_RET_KEY: RefCell<HashMap<u32, Rc<dyn Fn() -> (Box<JsSerializable>) >>> = RefCell::new(HashMap::new());
[INFO] [stderr]    |                                                                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:54:83
[INFO] [stderr]    |
[INFO] [stderr] 54 |     static CALLBACKS_ARG_RET_KEY: RefCell<HashMap<u32, Rc<dyn Fn(JsValue) -> (Box<JsSerializable>) >>> = RefCell::new(HashMap::new());
[INFO] [stderr]    |                                                                                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:130:42
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn register_callback(callback:  &'static Fn() -> ()) -> u32  {
[INFO] [stderr]     |                                          ^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:139:45
[INFO] [stderr]     |
[INFO] [stderr] 139 | fn register_callback_ret(callback: &'static Fn() -> (Box<JsSerializable>)) -> u32  {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn() -> (Box<JsSerializable>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:139:58
[INFO] [stderr]     |
[INFO] [stderr] 139 | fn register_callback_ret(callback: &'static Fn() -> (Box<JsSerializable>)) -> u32  {
[INFO] [stderr]     |                                                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:148:46
[INFO] [stderr]     |
[INFO] [stderr] 148 | fn register_callback_arg(callback:  &'static Fn(JsValue) -> ()) -> u32  {
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(JsValue) -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:157:50
[INFO] [stderr]     |
[INFO] [stderr] 157 | fn register_callback_ret_arg(callback:  &'static Fn(JsValue) -> (Box<JsSerializable>)) -> u32  {
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(JsValue) -> (Box<JsSerializable>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:157:70
[INFO] [stderr]     |
[INFO] [stderr] 157 | fn register_callback_ret_arg(callback:  &'static Fn(JsValue) -> (Box<JsSerializable>)) -> u32  {
[INFO] [stderr]     |                                                                      ^^^^^^^^^^^^^^ help: use `dyn`: `dyn JsSerializable`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/js_val_impl/new.rs:40:21
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 let mut vec = Vec::with_capacity(alloc_size as usize);
[INFO] [stderr]    |                     ----^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/js_val_impl/new.rs:40:21
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 let mut vec = Vec::with_capacity(alloc_size as usize);
[INFO] [stderr]    |                     ----^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.32s
[INFO] running `"docker" "inspect" "b1369a7644b77af6dca9f0841cf656a26634ab4c68f612aac7c1b594de28a4f8"`
[INFO] running `"docker" "rm" "-f" "b1369a7644b77af6dca9f0841cf656a26634ab4c68f612aac7c1b594de28a4f8"`
[INFO] [stdout] b1369a7644b77af6dca9f0841cf656a26634ab4c68f612aac7c1b594de28a4f8