[INFO] fetching crate jvm-serializable 0.0.3...
[INFO] testing jvm-serializable-0.0.3 against 1.60.0 for beta-1.61-1
[INFO] extracting crate jvm-serializable 0.0.3 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate jvm-serializable 0.0.3 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jvm-serializable 0.0.3
[INFO] finished tweaking crates.io crate jvm-serializable 0.0.3
[INFO] tweaked toml for crates.io crate jvm-serializable 0.0.3 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jvm-macro v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96dde9a54489cf76b2e8f3a75d60a3409c4c2d199a3d0ccabe45a248c7bd4399
[INFO] running `Command { std: "docker" "start" "-a" "96dde9a54489cf76b2e8f3a75d60a3409c4c2d199a3d0ccabe45a248c7bd4399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96dde9a54489cf76b2e8f3a75d60a3409c4c2d199a3d0ccabe45a248c7bd4399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96dde9a54489cf76b2e8f3a75d60a3409c4c2d199a3d0ccabe45a248c7bd4399", kill_on_drop: false }`
[INFO] [stdout] 96dde9a54489cf76b2e8f3a75d60a3409c4c2d199a3d0ccabe45a248c7bd4399
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dda043a4a4a0f2c59c5a1ddca3d12830a94d0ee6fb2f2da7d864e3b2b9b800bb
[INFO] running `Command { std: "docker" "start" "-a" "dda043a4a4a0f2c59c5a1ddca3d12830a94d0ee6fb2f2da7d864e3b2b9b800bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_derive_internals v0.25.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling jvm-macro v0.0.1
[INFO] [stderr]    Compiling jvm-serializable v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]   --> src/lib.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |         use std::sync::{Mutex, Arc};
[INFO] [stdout]    |                         ^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]   --> src/lib.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         use std::time::Instant;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicBool`, `Ordering`
[INFO] [stdout]   --> src/lib.rs:24:33
[INFO] [stdout]    |
[INFO] [stdout] 24 |         use std::sync::atomic::{AtomicBool, Ordering};
[INFO] [stdout]    |                                 ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:130:56
[INFO] [stdout]     |
[INFO] [stdout] 130 |             fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> where
[INFO] [stdout]     |                                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:144:56
[INFO] [stdout]     |
[INFO] [stdout] 144 |             fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> where
[INFO] [stdout]     |                                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:158:54
[INFO] [stdout]     |
[INFO] [stdout] 158 |             fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> where
[INFO] [stdout]     |                                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:172:54
[INFO] [stdout]     |
[INFO] [stdout] 172 |             fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> where
[INFO] [stdout]     |                                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/lib.rs:186:52
[INFO] [stdout]     |
[INFO] [stdout] 186 |             fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), Self::Error> where
[INFO] [stdout]     |                                                    ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:191:54
[INFO] [stdout]     |
[INFO] [stdout] 191 |             fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> where
[INFO] [stdout]     |                                                      ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]    --> src/lib.rs:284:54
[INFO] [stdout]     |
[INFO] [stdout] 284 |             fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error> where
[INFO] [stdout]     |                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:284:73
[INFO] [stdout]     |
[INFO] [stdout] 284 |             fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error> where
[INFO] [stdout]     |                                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/lib.rs:345:21
[INFO] [stdout]     |
[INFO] [stdout] 345 |                 for i in 0..num_fileds {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/lib.rs:386:35
[INFO] [stdout]     |
[INFO] [stdout] 386 |                 for (name, type_, idx) in fields {
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:569:48
[INFO] [stdout]     |
[INFO] [stdout] 569 |             fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error> where
[INFO] [stdout]     |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:580:44
[INFO] [stdout]     |
[INFO] [stdout] 580 |             fn serialize_unit_struct(self, name: &'static str) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:585:45
[INFO] [stdout]     |
[INFO] [stdout] 585 | ...   fn serialize_unit_variant(self, name: &'static str, variant_index: u32, variant: &'static str) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout]     |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_index`
[INFO] [stdout]    --> src/lib.rs:585:65
[INFO] [stdout]     |
[INFO] [stdout] 585 | ..., name: &'static str, variant_index: u32, variant: &'static str) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/lib.rs:585:85
[INFO] [stdout]     |
[INFO] [stdout] 585 | ...ic str, variant_index: u32, variant: &'static str) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:590:58
[INFO] [stdout]     |
[INFO] [stdout] 590 |             fn serialize_newtype_struct<T: ?Sized>(self, name: &'static str, value: &T) -> Result<Self::Ok, Self::Error> where
[INFO] [stdout]     |                                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:590:78
[INFO] [stdout]     |
[INFO] [stdout] 590 |             fn serialize_newtype_struct<T: ?Sized>(self, name: &'static str, value: &T) -> Result<Self::Ok, Self::Error> where
[INFO] [stdout]     |                                                                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:596:59
[INFO] [stdout]     |
[INFO] [stdout] 596 | ...   fn serialize_newtype_variant<T: ?Sized>(self, name: &'static str, variant_index: u32, variant: &'static str, value: &T) -> Result<S...
[INFO] [stdout]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_index`
[INFO] [stdout]    --> src/lib.rs:596:79
[INFO] [stdout]     |
[INFO] [stdout] 596 | ..., name: &'static str, variant_index: u32, variant: &'static str, value: &T) -> Result<Self::Ok, Self::Error> where
[INFO] [stdout]     |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/lib.rs:596:99
[INFO] [stdout]     |
[INFO] [stdout] 596 | ...ic str, variant_index: u32, variant: &'static str, value: &T) -> Result<Self::Ok, Self::Error> where
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:596:122
[INFO] [stdout]     |
[INFO] [stdout] 596 | ...: u32, variant: &'static str, value: &T) -> Result<Self::Ok, Self::Error> where
[INFO] [stdout]     |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:602:36
[INFO] [stdout]     |
[INFO] [stdout] 602 |             fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:607:38
[INFO] [stdout]     |
[INFO] [stdout] 607 |             fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:612:45
[INFO] [stdout]     |
[INFO] [stdout] 612 |             fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct, Self::Error> {
[INFO] [stdout]     |                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:612:65
[INFO] [stdout]     |
[INFO] [stdout] 612 |             fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct, Self::Error> {
[INFO] [stdout]     |                                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:617:46
[INFO] [stdout]     |
[INFO] [stdout] 617 | ...   fn serialize_tuple_variant(self, name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::Seriali...
[INFO] [stdout]     |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_index`
[INFO] [stdout]    --> src/lib.rs:617:66
[INFO] [stdout]     |
[INFO] [stdout] 617 | ..., name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeTupleVariant, Self::Error> {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/lib.rs:617:86
[INFO] [stdout]     |
[INFO] [stdout] 617 | ...ic str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeTupleVariant, Self::Error> {
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:617:109
[INFO] [stdout]     |
[INFO] [stdout] 617 | ...ex: u32, variant: &'static str, len: usize) -> Result<Self::SerializeTupleVariant, Self::Error> {
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:622:36
[INFO] [stdout]     |
[INFO] [stdout] 622 |             fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:627:39
[INFO] [stdout]     |
[INFO] [stdout] 627 |             fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeStruct, Self::Error> {
[INFO] [stdout]     |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:627:59
[INFO] [stdout]     |
[INFO] [stdout] 627 |             fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeStruct, Self::Error> {
[INFO] [stdout]     |                                                           ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:632:47
[INFO] [stdout]     |
[INFO] [stdout] 632 | ...   fn serialize_struct_variant(self, name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::Serial...
[INFO] [stdout]     |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_index`
[INFO] [stdout]    --> src/lib.rs:632:67
[INFO] [stdout]     |
[INFO] [stdout] 632 | ..., name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant, Self::Error> {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/lib.rs:632:87
[INFO] [stdout]     |
[INFO] [stdout] 632 | ...ic str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant, Self::Error> {
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:632:110
[INFO] [stdout]     |
[INFO] [stdout] 632 | ...ex: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant, Self::Error> {
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/lib.rs:637:45
[INFO] [stdout]     |
[INFO] [stdout] 637 |             fn collect_str<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error> where T: Display {
[INFO] [stdout]     |                                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:647:41
[INFO] [stdout]     |
[INFO] [stdout] 647 |             fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:652:42
[INFO] [stdout]     |
[INFO] [stdout] 652 |             fn deserialize_bool<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:657:40
[INFO] [stdout]     |
[INFO] [stdout] 657 |             fn deserialize_i8<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:662:41
[INFO] [stdout]     |
[INFO] [stdout] 662 |             fn deserialize_i16<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:675:41
[INFO] [stdout]     |
[INFO] [stdout] 675 |             fn deserialize_i64<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:680:40
[INFO] [stdout]     |
[INFO] [stdout] 680 |             fn deserialize_u8<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:685:41
[INFO] [stdout]     |
[INFO] [stdout] 685 |             fn deserialize_u16<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:690:41
[INFO] [stdout]     |
[INFO] [stdout] 690 |             fn deserialize_u32<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:695:41
[INFO] [stdout]     |
[INFO] [stdout] 695 |             fn deserialize_u64<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:700:41
[INFO] [stdout]     |
[INFO] [stdout] 700 |             fn deserialize_f32<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:705:41
[INFO] [stdout]     |
[INFO] [stdout] 705 |             fn deserialize_f64<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:710:42
[INFO] [stdout]     |
[INFO] [stdout] 710 |             fn deserialize_char<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:715:41
[INFO] [stdout]     |
[INFO] [stdout] 715 |             fn deserialize_str<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:731:43
[INFO] [stdout]     |
[INFO] [stdout] 731 |             fn deserialize_bytes<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:736:46
[INFO] [stdout]     |
[INFO] [stdout] 736 |             fn deserialize_byte_buf<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:741:44
[INFO] [stdout]     |
[INFO] [stdout] 741 |             fn deserialize_option<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:746:42
[INFO] [stdout]     |
[INFO] [stdout] 746 |             fn deserialize_unit<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:751:49
[INFO] [stdout]     |
[INFO] [stdout] 751 |             fn deserialize_unit_struct<V>(self, name: &'static str, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:751:69
[INFO] [stdout]     |
[INFO] [stdout] 751 |             fn deserialize_unit_struct<V>(self, name: &'static str, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:756:52
[INFO] [stdout]     |
[INFO] [stdout] 756 |             fn deserialize_newtype_struct<V>(self, name: &'static str, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:756:72
[INFO] [stdout]     |
[INFO] [stdout] 756 |             fn deserialize_newtype_struct<V>(self, name: &'static str, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                                                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:761:41
[INFO] [stdout]     |
[INFO] [stdout] 761 |             fn deserialize_seq<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:801:50
[INFO] [stdout]     |
[INFO] [stdout] 801 | ...   fn deserialize_tuple_struct<V>(self, name: &'static str, len: usize, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error>...
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:801:70
[INFO] [stdout]     |
[INFO] [stdout] 801 | ...   fn deserialize_tuple_struct<V>(self, name: &'static str, len: usize, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error>...
[INFO] [stdout]     |                                                                ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:801:82
[INFO] [stdout]     |
[INFO] [stdout] 801 | ...: &'static str, len: usize, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:806:41
[INFO] [stdout]     |
[INFO] [stdout] 806 |             fn deserialize_map<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:811:44
[INFO] [stdout]     |
[INFO] [stdout] 811 | ...   fn deserialize_struct<V>(self, name: &'static str, fields: &'static [&'static str], visitor: V) -> Result<<V as Visitor<'de>>::Valu...
[INFO] [stdout]     |                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:842:42
[INFO] [stdout]     |
[INFO] [stdout] 842 | ...   fn deserialize_enum<V>(self, name: &'static str, variants: &'static [&'static str], visitor: V) -> Result<<V as Visitor<'de>>::Valu...
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variants`
[INFO] [stdout]    --> src/lib.rs:842:62
[INFO] [stdout]     |
[INFO] [stdout] 842 | ...(self, name: &'static str, variants: &'static [&'static str], visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variants`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:842:97
[INFO] [stdout]     |
[INFO] [stdout] 842 | ...s: &'static [&'static str], visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:847:48
[INFO] [stdout]     |
[INFO] [stdout] 847 |             fn deserialize_identifier<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/lib.rs:852:49
[INFO] [stdout]     |
[INFO] [stdout] 852 |             fn deserialize_ignored_any<V>(self, visitor: V) -> Result<<V as Visitor<'de>>::Value, Self::Error> where
[INFO] [stdout]     |                                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]    --> src/lib.rs:896:26
[INFO] [stdout]     |
[INFO] [stdout] 896 |             fn custom<T>(msg: T) -> Self where
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]    --> src/lib.rs:904:26
[INFO] [stdout]     |
[INFO] [stdout] 904 |             fn custom<T>(msg: T) -> Self where
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(type_name_of_val)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(core_intrinsics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 76 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jvm-serializable` due to 4 previous errors; 76 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "dda043a4a4a0f2c59c5a1ddca3d12830a94d0ee6fb2f2da7d864e3b2b9b800bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dda043a4a4a0f2c59c5a1ddca3d12830a94d0ee6fb2f2da7d864e3b2b9b800bb", kill_on_drop: false }`
[INFO] [stdout] dda043a4a4a0f2c59c5a1ddca3d12830a94d0ee6fb2f2da7d864e3b2b9b800bb