[INFO] fetching crate mz-avro 0.7.0...
[INFO] checking mz-avro-0.7.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mz-avro 0.7.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mz-avro 0.7.0
[INFO] finished tweaking crates.io crate mz-avro 0.7.0
[INFO] tweaked toml for crates.io crate mz-avro 0.7.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mz-avro 0.7.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mz-avro 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18f8908a670239b860d513a84c1f0f76ee3ffb214c8746642c8d3f5843d10fcb
[INFO] running `Command { std: "docker" "start" "-a" "18f8908a670239b860d513a84c1f0f76ee3ffb214c8746642c8d3f5843d10fcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18f8908a670239b860d513a84c1f0f76ee3ffb214c8746642c8d3f5843d10fcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18f8908a670239b860d513a84c1f0f76ee3ffb214c8746642c8d3f5843d10fcb", kill_on_drop: false }`
[INFO] [stdout] 18f8908a670239b860d513a84c1f0f76ee3ffb214c8746642c8d3f5843d10fcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd9b8b36b4e71afa3e0a3699225a3ebeea79bd48634790070e20835419afb9d1
[INFO] running `Command { std: "docker" "start" "-a" "dd9b8b36b4e71afa3e0a3699225a3ebeea79bd48634790070e20835419afb9d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.131
[INFO] [stderr]    Compiling serde_derive v1.0.143
[INFO] [stderr]    Compiling serde v1.0.143
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]    Compiling anyhow v1.0.61
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking tracing-core v0.1.29
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]     Checking block-buffer v0.10.2
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking uuid v1.1.2
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking sha2 v0.10.2
[INFO] [stderr]     Checking md-5 v0.10.1
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking chrono v0.4.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling enum-kinds v0.5.1
[INFO] [stderr]     Checking tracing v0.1.36
[INFO] [stderr]     Checking mz-avro v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `reader_fullnames` is never read
[INFO] [stdout]    --> src/reader.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 327 | pub struct SchemaResolver<'a> {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 335 |     pub reader_fullnames: HashMap<usize, &'a FullName>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, i32>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 742 |     define_simple_decoder!(I32Decoder, i32, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 742 |     define_simple_decoder!(I32Decoder, i32, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, i64>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 743 |     define_simple_decoder!(I64Decoder, i64, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 743 |     define_simple_decoder!(I64Decoder, i64, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, i64>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 743 |     define_simple_decoder!(I64Decoder, i64, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/schema.rs:157:19
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn as_ref(&self) -> SchemaPieceRefOrNamed {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn as_ref(&self) -> SchemaPieceRefOrNamed<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/schema.rs:368:21
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn top_node(&self) -> SchemaNode {
[INFO] [stdout]     |                     ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn top_node(&self) -> SchemaNode<'_> {
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/schema.rs:376:30
[INFO] [stdout]     |
[INFO] [stdout] 376 |     pub fn top_node_or_named(&self) -> SchemaNodeOrNamed {
[INFO] [stdout]     |                              ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 376 |     pub fn top_node_or_named(&self) -> SchemaNodeOrNamed<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mz-avro` (lib) due to 5 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `reader_fullnames` is never read
[INFO] [stdout]    --> src/reader.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 327 | pub struct SchemaResolver<'a> {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 335 |     pub reader_fullnames: HashMap<usize, &'a FullName>,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestSerdeSerialize` is never constructed
[INFO] [stdout]    --> src/writer.rs:528:12
[INFO] [stdout]     |
[INFO] [stdout] 528 |     struct TestSerdeSerialize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, i32>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 742 |     define_simple_decoder!(I32Decoder, i32, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 742 |     define_simple_decoder!(I32Decoder, i32, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, i64>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 743 |     define_simple_decoder!(I64Decoder, i64, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 743 |     define_simple_decoder!(I64Decoder, i64, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, i64>
[INFO] [stdout]    --> src/decode.rs:721:63
[INFO] [stdout]     |
[INFO] [stdout] 721 |                             Scalar::$scalar_branch(inner) => {inner.try_into()?}
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 743 |     define_simple_decoder!(I64Decoder, i64, Int;Long);
[INFO] [stdout]     |     ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `define_simple_decoder` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/schema.rs:157:19
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn as_ref(&self) -> SchemaPieceRefOrNamed {
[INFO] [stdout]     |                   ^^^^^     ^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn as_ref(&self) -> SchemaPieceRefOrNamed<'_> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/schema.rs:368:21
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn top_node(&self) -> SchemaNode {
[INFO] [stdout]     |                     ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn top_node(&self) -> SchemaNode<'_> {
[INFO] [stdout]     |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/schema.rs:376:30
[INFO] [stdout]     |
[INFO] [stdout] 376 |     pub fn top_node_or_named(&self) -> SchemaNodeOrNamed {
[INFO] [stdout]     |                              ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 376 |     pub fn top_node_or_named(&self) -> SchemaNodeOrNamed<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mz-avro` (lib test) due to 5 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "dd9b8b36b4e71afa3e0a3699225a3ebeea79bd48634790070e20835419afb9d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd9b8b36b4e71afa3e0a3699225a3ebeea79bd48634790070e20835419afb9d1", kill_on_drop: false }`
[INFO] [stdout] dd9b8b36b4e71afa3e0a3699225a3ebeea79bd48634790070e20835419afb9d1
