[INFO] fetching crate jconfig 0.1.0...
[INFO] building jconfig-0.1.0 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate jconfig 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate jconfig 0.1.0 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jconfig 0.1.0
[INFO] finished tweaking crates.io crate jconfig 0.1.0
[INFO] tweaked toml for crates.io crate jconfig 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded traitobject v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d8ffa9281c3e299a4bf52d9281facf183971657a648165a8a8e39aa7b27b37d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4d8ffa9281c3e299a4bf52d9281facf183971657a648165a8a8e39aa7b27b37d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d8ffa9281c3e299a4bf52d9281facf183971657a648165a8a8e39aa7b27b37d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d8ffa9281c3e299a4bf52d9281facf183971657a648165a8a8e39aa7b27b37d", kill_on_drop: false }`
[INFO] [stdout] 4d8ffa9281c3e299a4bf52d9281facf183971657a648165a8a8e39aa7b27b37d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8abdb5516e447935b52c34e1fbf13b881c799d2f4aca2b51e5cdc23656d238e5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8abdb5516e447935b52c34e1fbf13b881c799d2f4aca2b51e5cdc23656d238e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling traitobject v0.0.3
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling jconfig v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/field.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn clone_box(&self) -> Box<Field>;
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/field.rs:33:32
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn clone_box(&self) -> Box<Field> { Box::new(self.clone()) }
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/field.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let t = try!(json::decode(&s));
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/config.rs:58:15
[INFO] [stdout]    |
[INFO] [stdout] 58 |         match try!(Json::from_str(s)) {
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/config.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut f = try!(File::open(path));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/config.rs:80:22
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let config = try!(Config::from_str(j.as_ref()));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/item.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Typed(TypeId, Box<Field>),
[INFO] [stdout]    |                       ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/item.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Field {
[INFO] [stdout]    |      ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/item.rs:114:60
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn parse<V: Field + 'static>(raw: &RawValue) -> Result<Box<Field>> {
[INFO] [stdout]     |                                                            ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/item.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let h: Box<Field> = Box::new(v);
[INFO] [stdout]     |                    ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/item.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/item.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/item.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |             mem::replace(inner, Inner::Typed(tid, bv));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/item.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |             mem::replace(inner, Inner::Typed(tid, bv));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.19s
[INFO] running `Command { std: "docker" "inspect" "8abdb5516e447935b52c34e1fbf13b881c799d2f4aca2b51e5cdc23656d238e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8abdb5516e447935b52c34e1fbf13b881c799d2f4aca2b51e5cdc23656d238e5", kill_on_drop: false }`
[INFO] [stdout] 8abdb5516e447935b52c34e1fbf13b881c799d2f4aca2b51e5cdc23656d238e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e600c63d918b236b05bcc94c9b3435c5c9552d6519d40548659a2ed6fd4ff377
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e600c63d918b236b05bcc94c9b3435c5c9552d6519d40548659a2ed6fd4ff377", kill_on_drop: false }`
[INFO] [stderr]    Compiling jconfig v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/field.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn clone_box(&self) -> Box<Field>;
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/field.rs:33:32
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn clone_box(&self) -> Box<Field> { Box::new(self.clone()) }
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/field.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let t = try!(json::decode(&s));
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/config.rs:58:15
[INFO] [stdout]    |
[INFO] [stdout] 58 |         match try!(Json::from_str(s)) {
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/config.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut f = try!(File::open(path));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/config.rs:80:22
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let config = try!(Config::from_str(j.as_ref()));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/item.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Typed(TypeId, Box<Field>),
[INFO] [stdout]    |                       ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/item.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Field {
[INFO] [stdout]    |      ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/item.rs:114:60
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn parse<V: Field + 'static>(raw: &RawValue) -> Result<Box<Field>> {
[INFO] [stdout]     |                                                            ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/item.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let h: Box<Field> = Box::new(v);
[INFO] [stdout]     |                    ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/item.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/item.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/item.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |             mem::replace(inner, Inner::Typed(tid, bv));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/item.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |             mem::replace(inner, Inner::Typed(tid, bv));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/field.rs:28:32
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn clone_box(&self) -> Box<Field>;
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/field.rs:33:32
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn clone_box(&self) -> Box<Field> { Box::new(self.clone()) }
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/field.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let t = try!(json::decode(&s));
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/config.rs:58:15
[INFO] [stdout]    |
[INFO] [stdout] 58 |         match try!(Json::from_str(s)) {
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/config.rs:77:21
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut f = try!(File::open(path));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/config.rs:80:22
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let config = try!(Config::from_str(j.as_ref()));
[INFO] [stdout]    |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/item.rs:22:23
[INFO] [stdout]    |
[INFO] [stdout] 22 |     Typed(TypeId, Box<Field>),
[INFO] [stdout]    |                       ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/item.rs:40:6
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Field {
[INFO] [stdout]    |      ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/item.rs:114:60
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn parse<V: Field + 'static>(raw: &RawValue) -> Result<Box<Field>> {
[INFO] [stdout]     |                                                            ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/item.rs:117:20
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let h: Box<Field> = Box::new(v);
[INFO] [stdout]     |                    ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/item.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/item.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/item.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |             mem::replace(inner, Inner::Typed(tid, bv));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/item.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |             mem::replace(inner, Inner::Typed(tid, bv));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "e600c63d918b236b05bcc94c9b3435c5c9552d6519d40548659a2ed6fd4ff377", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e600c63d918b236b05bcc94c9b3435c5c9552d6519d40548659a2ed6fd4ff377", kill_on_drop: false }`
[INFO] [stdout] e600c63d918b236b05bcc94c9b3435c5c9552d6519d40548659a2ed6fd4ff377
