[INFO] fetching crate schemafy_snapshot 0.4.2...
[INFO] testing schemafy_snapshot-0.4.2 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate schemafy_snapshot 0.4.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate schemafy_snapshot 0.4.2 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 schemafy_snapshot 0.4.2
[INFO] finished tweaking crates.io crate schemafy_snapshot 0.4.2
[INFO] tweaked toml for crates.io crate schemafy_snapshot 0.4.2 written to /workspace/builds/worker-12/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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 11509e7dde8776d6fc2cb82be0c3378bea381da0981ded89aff7717d3f4bc45e
[INFO] running `Command { std: "docker" "start" "-a" "11509e7dde8776d6fc2cb82be0c3378bea381da0981ded89aff7717d3f4bc45e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11509e7dde8776d6fc2cb82be0c3378bea381da0981ded89aff7717d3f4bc45e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11509e7dde8776d6fc2cb82be0c3378bea381da0981ded89aff7717d3f4bc45e", kill_on_drop: false }`
[INFO] [stdout] 11509e7dde8776d6fc2cb82be0c3378bea381da0981ded89aff7717d3f4bc45e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] bfc5d4bcbc89b3cc0fb40999130d17eb681a950886d81bba62b8ec1f7a17bbea
[INFO] running `Command { std: "docker" "start" "-a" "bfc5d4bcbc89b3cc0fb40999130d17eb681a950886d81bba62b8ec1f7a17bbea", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling schemafy_snapshot v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/schema.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[serde(rename = "simpleTypes")]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 6 | #[derive(Clone, PartialEq, Debug, Deserialize, Serialize)]
[INFO] [stdout]   |                                   ----------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` 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 a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:571:5
[INFO] [stdout]     |
[INFO] [stdout] 571 |     try!(
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:569:69
[INFO] [stdout]     |
[INFO] [stdout] 569 | fn format(mut command: Command, output: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[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: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:570:21
[INFO] [stdout]     |
[INFO] [stdout] 570 |     let mut child = try!(command.stdin(Stdio::piped()).stdout(Stdio::piped()).spawn());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:578:18
[INFO] [stdout]     |
[INFO] [stdout] 578 |     let output = try!(child.wait_with_output());
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:583:8
[INFO] [stdout]     |
[INFO] [stdout] 583 |     Ok(try!(String::from_utf8(output.stdout)))
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:618:55
[INFO] [stdout]     |
[INFO] [stdout] 618 |     pub fn build(self, s: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[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/lib.rs:651:78
[INFO] [stdout]     |
[INFO] [stdout] 651 | pub fn generate(root_name: Option<&str>, schema: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                                              ^^^^^ help: use `dyn`: `dyn Error`
[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: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.87s
[INFO] running `Command { std: "docker" "inspect" "bfc5d4bcbc89b3cc0fb40999130d17eb681a950886d81bba62b8ec1f7a17bbea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfc5d4bcbc89b3cc0fb40999130d17eb681a950886d81bba62b8ec1f7a17bbea", kill_on_drop: false }`
[INFO] [stdout] bfc5d4bcbc89b3cc0fb40999130d17eb681a950886d81bba62b8ec1f7a17bbea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 83d37985df327da95b46ce85f3b7ad4c00f2bfc6e409811baff128ed06ee6c1e
[INFO] running `Command { std: "docker" "start" "-a" "83d37985df327da95b46ce85f3b7ad4c00f2bfc6e409811baff128ed06ee6c1e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling schemafy_snapshot v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/schema.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[serde(rename = "simpleTypes")]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 6 | #[derive(Clone, PartialEq, Debug, Deserialize, Serialize)]
[INFO] [stdout]   |                                   ----------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` 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 a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:571:5
[INFO] [stdout]     |
[INFO] [stdout] 571 |     try!(
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:569:69
[INFO] [stdout]     |
[INFO] [stdout] 569 | fn format(mut command: Command, output: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[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: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:570:21
[INFO] [stdout]     |
[INFO] [stdout] 570 |     let mut child = try!(command.stdin(Stdio::piped()).stdout(Stdio::piped()).spawn());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:578:18
[INFO] [stdout]     |
[INFO] [stdout] 578 |     let output = try!(child.wait_with_output());
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:583:8
[INFO] [stdout]     |
[INFO] [stdout] 583 |     Ok(try!(String::from_utf8(output.stdout)))
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:618:55
[INFO] [stdout]     |
[INFO] [stdout] 618 |     pub fn build(self, s: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[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/lib.rs:651:78
[INFO] [stdout]     |
[INFO] [stdout] 651 | pub fn generate(root_name: Option<&str>, schema: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                                              ^^^^^ help: use `dyn`: `dyn Error`
[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: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read src/schema.json: No such file or directory (os error 2)
[INFO] [stdout]    --> src/lib.rs:679:17
[INFO] [stdout]     |
[INFO] [stdout] 679 |         let s = include_str!("schema.json");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read src/../tests/debugserver-schema.json: No such file or directory (os error 2)
[INFO] [stdout]    --> src/lib.rs:754:17
[INFO] [stdout]     |
[INFO] [stdout] 754 |         let s = include_str!("../tests/debugserver-schema.json");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read src/../tests/nested.json: No such file or directory (os error 2)
[INFO] [stdout]    --> src/lib.rs:765:17
[INFO] [stdout]     |
[INFO] [stdout] 765 |         let s = include_str!("../tests/nested.json");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read src/../tests/vega/vega.json: No such file or directory (os error 2)
[INFO] [stdout]    --> src/lib.rs:776:17
[INFO] [stdout]     |
[INFO] [stdout] 776 |         let s = include_str!("../tests/vega/vega.json");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read src/../tests/option-type.json: No such file or directory (os error 2)
[INFO] [stdout]    --> src/lib.rs:785:17
[INFO] [stdout]     |
[INFO] [stdout] 785 |         let s = include_str!("../tests/option-type.json");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read src/../tests/empty-struct.json: No such file or directory (os error 2)
[INFO] [stdout]    --> src/lib.rs:794:17
[INFO] [stdout]     |
[INFO] [stdout] 794 |         let s = include_str!("../tests/empty-struct.json");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read src/../tests/any-properties.json: No such file or directory (os error 2)
[INFO] [stdout]    --> src/lib.rs:805:17
[INFO] [stdout]     |
[INFO] [stdout] 805 |         let s = include_str!("../tests/any-properties.json");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read src/../tests/root-array.json: No such file or directory (os error 2)
[INFO] [stdout]    --> src/lib.rs:818:17
[INFO] [stdout]     |
[INFO] [stdout] 818 |         let s = include_str!("../tests/root-array.json");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> src/schema.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[serde(rename = "simpleTypes")]
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout] 6 | #[derive(Clone, PartialEq, Debug, Deserialize, Serialize)]
[INFO] [stdout]   |                                   ----------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` 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 a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:571:5
[INFO] [stdout]     |
[INFO] [stdout] 571 |     try!(
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:569:69
[INFO] [stdout]     |
[INFO] [stdout] 569 | fn format(mut command: Command, output: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[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: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:570:21
[INFO] [stdout]     |
[INFO] [stdout] 570 |     let mut child = try!(command.stdin(Stdio::piped()).stdout(Stdio::piped()).spawn());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:578:18
[INFO] [stdout]     |
[INFO] [stdout] 578 |     let output = try!(child.wait_with_output());
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:583:8
[INFO] [stdout]     |
[INFO] [stdout] 583 |     Ok(try!(String::from_utf8(output.stdout)))
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:618:55
[INFO] [stdout]     |
[INFO] [stdout] 618 |     pub fn build(self, s: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[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/lib.rs:651:78
[INFO] [stdout]     |
[INFO] [stdout] 651 | pub fn generate(root_name: Option<&str>, schema: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                                              ^^^^^ help: use `dyn`: `dyn Error`
[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/lib.rs:667:73
[INFO] [stdout]     |
[INFO] [stdout] 667 |     fn generate(root_name: Option<&str>, s: &str) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                                         ^^^^^ help: use `dyn`: `dyn Error`
[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] error: aborting due to 8 previous errors; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `schemafy_snapshot` due to 9 previous errors; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "83d37985df327da95b46ce85f3b7ad4c00f2bfc6e409811baff128ed06ee6c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83d37985df327da95b46ce85f3b7ad4c00f2bfc6e409811baff128ed06ee6c1e", kill_on_drop: false }`
[INFO] [stdout] 83d37985df327da95b46ce85f3b7ad4c00f2bfc6e409811baff128ed06ee6c1e
