[INFO] fetching crate jconfig 0.1.0...
[INFO] testing jconfig-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate jconfig 0.1.0 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate jconfig 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-74/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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" "+beta-2021-08-01" "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 traitobject v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3751729dbc403b3f58d5c04d564f6bd8445088d9aafc2d5fff99ca9c24584144
[INFO] running `Command { std: "docker" "start" "-a" "3751729dbc403b3f58d5c04d564f6bd8445088d9aafc2d5fff99ca9c24584144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3751729dbc403b3f58d5c04d564f6bd8445088d9aafc2d5fff99ca9c24584144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3751729dbc403b3f58d5c04d564f6bd8445088d9aafc2d5fff99ca9c24584144", kill_on_drop: false }`
[INFO] [stdout] 3751729dbc403b3f58d5c04d564f6bd8445088d9aafc2d5fff99ca9c24584144
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a967d4879934e7e7b0a2a9dc35fa343ce3a4fd943251f20d35e3a2e17bfb00ad
[INFO] running `Command { std: "docker" "start" "-a" "a967d4879934e7e7b0a2a9dc35fa343ce3a4fd943251f20d35e3a2e17bfb00ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling traitobject v0.0.3
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling log v0.3.9
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 6.08s
[INFO] running `Command { std: "docker" "inspect" "a967d4879934e7e7b0a2a9dc35fa343ce3a4fd943251f20d35e3a2e17bfb00ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a967d4879934e7e7b0a2a9dc35fa343ce3a4fd943251f20d35e3a2e17bfb00ad", kill_on_drop: false }`
[INFO] [stdout] a967d4879934e7e7b0a2a9dc35fa343ce3a4fd943251f20d35e3a2e17bfb00ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19706ca3a42bd2da618e0c99abf947ad04a8716216599a2e87c11ec2516f2ae9
[INFO] running `Command { std: "docker" "start" "-a" "19706ca3a42bd2da618e0c99abf947ad04a8716216599a2e87c11ec2516f2ae9", kill_on_drop: false }`
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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] [stderr]    Compiling jconfig v0.1.0 (/opt/rustwide/workdir)
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[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 0.92s
[INFO] running `Command { std: "docker" "inspect" "19706ca3a42bd2da618e0c99abf947ad04a8716216599a2e87c11ec2516f2ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19706ca3a42bd2da618e0c99abf947ad04a8716216599a2e87c11ec2516f2ae9", kill_on_drop: false }`
[INFO] [stdout] 19706ca3a42bd2da618e0c99abf947ad04a8716216599a2e87c11ec2516f2ae9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 00e0a2a6ae450b5724ca70862dcd3c419d52e335cf8eae56c672e902747b5cae
[INFO] running `Command { std: "docker" "start" "-a" "00e0a2a6ae450b5724ca70862dcd3c419d52e335cf8eae56c672e902747b5cae", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/field.rs:28:32
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn clone_box(&self) -> Box<Field>;
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/field.rs:33:32
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn clone_box(&self) -> Box<Field> { Box::new(self.clone()) }
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/field.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let t = try!(json::decode(&s));
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/config.rs:58:15
[INFO] [stderr]    |
[INFO] [stderr] 58 |         match try!(Json::from_str(s)) {
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/config.rs:77:21
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let mut f = try!(File::open(path));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/config.rs:80:22
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let config = try!(Config::from_str(j.as_ref()));
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/item.rs:22:23
[INFO] [stderr]    |
[INFO] [stderr] 22 |     Typed(TypeId, Box<Field>),
[INFO] [stderr]    |                       ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/item.rs:40:6
[INFO] [stderr]    |
[INFO] [stderr] 40 | impl Field {
[INFO] [stderr]    |      ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/item.rs:114:60
[INFO] [stderr]     |
[INFO] [stderr] 114 | fn parse<V: Field + 'static>(raw: &RawValue) -> Result<Box<Field>> {
[INFO] [stderr]     |                                                            ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/item.rs:117:20
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let h: Box<Field> = Box::new(v);
[INFO] [stderr]     |                    ^^^^^ help: use `dyn`: `dyn Field`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/item.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut inner = unsafe { &mut *self.inner.get() };
[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/item.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |         let mut inner = unsafe { &mut *self.inner.get() };
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]   --> src/item.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 81 |             mem::replace(inner, Inner::Typed(tid, bv));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/item.rs:103:13
[INFO] [stderr]     |
[INFO] [stderr] 103 |             mem::replace(inner, Inner::Typed(tid, bv));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `jconfig` (lib) generated 14 warnings
[INFO] [stderr] warning: `jconfig` (lib test) generated 14 warnings (14 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/jconfig-cfb79649c82ee148)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests jconfig
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "00e0a2a6ae450b5724ca70862dcd3c419d52e335cf8eae56c672e902747b5cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00e0a2a6ae450b5724ca70862dcd3c419d52e335cf8eae56c672e902747b5cae", kill_on_drop: false }`
[INFO] [stdout] 00e0a2a6ae450b5724ca70862dcd3c419d52e335cf8eae56c672e902747b5cae
