[INFO] fetching crate gob 0.1.0...
[INFO] testing gob-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate gob 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate gob 0.1.0
[INFO] finished tweaking crates.io crate gob 0.1.0
[INFO] tweaked toml for crates.io crate gob 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate gob 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 49 packages to latest compatible versions
[INFO] [stderr]       Adding bytes v0.4.12 (available: v1.10.1)
[INFO] [stderr]       Adding owning_ref v0.3.3 (available: v0.4.1)
[INFO] [stderr]       Adding partial-io v0.3.1 (available: v0.5.4)
[INFO] [stderr]       Adding quickcheck v0.6.2 (available: v1.0.3)
[INFO] [stderr]       Adding serde_bytes v0.10.5 (available: v0.11.19)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83e3e952db45e236ac3408b9653ed699625500be4136635885c7ef2591dea768
[INFO] running `Command { std: "docker" "start" "-a" "83e3e952db45e236ac3408b9653ed699625500be4136635885c7ef2591dea768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83e3e952db45e236ac3408b9653ed699625500be4136635885c7ef2591dea768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83e3e952db45e236ac3408b9653ed699625500be4136635885c7ef2591dea768", kill_on_drop: false }`
[INFO] [stdout] 83e3e952db45e236ac3408b9653ed699625500be4136635885c7ef2591dea768
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0cbe3ee7e66e0c220a24b87471761e16a7917ef97f6951859e44595a9b7ad018
[INFO] running `Command { std: "docker" "start" "-a" "0cbe3ee7e66e0c220a24b87471761e16a7917ef97f6951859e44595a9b7ad018", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling serde_schema v0.0.1
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]    Compiling serde_schema_derive v0.0.1
[INFO] [stderr]    Compiling gob v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/internal/types/struct_type.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         { Type::build().seq_type(None, TypeId::FIELD_TYPE) };
[INFO] [stdout]    |         ^^                                                ^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout]  1 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_braces)]` implied by `#[warn(warnings)]`
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 85 -         { Type::build().seq_type(None, TypeId::FIELD_TYPE) };
[INFO] [stdout] 85 +         Type::build().seq_type(None, TypeId::FIELD_TYPE);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:41:58
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 write!(f, "{}: {}", ::std::error::Error::description(self), msg)
[INFO] [stdout]    |                                                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/internal/ser/serialize_wire_types.rs:110:29
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let mut ser = FieldValueSerializer {
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.40s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.13.11
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "0cbe3ee7e66e0c220a24b87471761e16a7917ef97f6951859e44595a9b7ad018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cbe3ee7e66e0c220a24b87471761e16a7917ef97f6951859e44595a9b7ad018", kill_on_drop: false }`
[INFO] [stdout] 0cbe3ee7e66e0c220a24b87471761e16a7917ef97f6951859e44595a9b7ad018
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a936a69d5d47101667a4eb35a3e27261e3a6b188cb01f80011d1db84c72470f
[INFO] running `Command { std: "docker" "start" "-a" "2a936a69d5d47101667a4eb35a3e27261e3a6b188cb01f80011d1db84c72470f", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling bencher v0.1.5
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling serde_bytes v0.10.5
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/internal/types/struct_type.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         { Type::build().seq_type(None, TypeId::FIELD_TYPE) };
[INFO] [stdout]    |         ^^                                                ^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout]  1 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_braces)]` implied by `#[warn(warnings)]`
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 85 -         { Type::build().seq_type(None, TypeId::FIELD_TYPE) };
[INFO] [stdout] 85 +         Type::build().seq_type(None, TypeId::FIELD_TYPE);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:41:58
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 write!(f, "{}: {}", ::std::error::Error::description(self), msg)
[INFO] [stdout]    |                                                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/internal/ser/serialize_wire_types.rs:110:29
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let mut ser = FieldValueSerializer {
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling quickcheck v0.6.2
[INFO] [stderr]    Compiling partial-io v0.3.1
[INFO] [stderr]    Compiling gob v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> tests/de.rs:382:26
[INFO] [stdout]     |
[INFO] [stdout] 382 |     struct EmptyStruct {};
[INFO] [stdout]     |                          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `serde_bytes::Bytes<'_>: SchemaSerialize` is not satisfied
[INFO] [stdout]    --> tests/ser.rs:279:26
[INFO] [stdout]     |
[INFO] [stdout] 279 |         stream.serialize(&Bytes::new(&[])).unwrap();
[INFO] [stdout]     |                --------- ^^^^^^^^^^^^^^^^ the trait `SchemaSerialize` is not implemented for `serde_bytes::Bytes<'_>`
[INFO] [stdout]     |                |
[INFO] [stdout]     |                required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `SchemaSerialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]               (T0, T1, T2, T3, T4, T5)
[INFO] [stdout]             and 78 others
[INFO] [stdout] note: required by a bound in `StreamSerializer::<O>::serialize`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/ser/mod.rs:79:12
[INFO] [stdout]     |
[INFO] [stdout]  77 |     pub fn serialize<T>(&mut self, value: &T) -> Result<(), Error>
[INFO] [stdout]     |            --------- required by a bound in this associated function
[INFO] [stdout]  78 |     where
[INFO] [stdout]  79 |         T: SchemaSerialize,
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ required by this bound in `StreamSerializer::<O>::serialize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `serde_bytes::Bytes<'_>: SchemaSerialize` is not satisfied
[INFO] [stdout]    --> tests/ser.rs:289:26
[INFO] [stdout]     |
[INFO] [stdout] 289 |         stream.serialize(&Bytes::new(&[1, 2, 3, 4])).unwrap();
[INFO] [stdout]     |                --------- ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `SchemaSerialize` is not implemented for `serde_bytes::Bytes<'_>`
[INFO] [stdout]     |                |
[INFO] [stdout]     |                required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `SchemaSerialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]               (T0, T1, T2, T3, T4, T5)
[INFO] [stdout]             and 78 others
[INFO] [stdout] note: required by a bound in `StreamSerializer::<O>::serialize`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/ser/mod.rs:79:12
[INFO] [stdout]     |
[INFO] [stdout]  77 |     pub fn serialize<T>(&mut self, value: &T) -> Result<(), Error>
[INFO] [stdout]     |            --------- required by a bound in this associated function
[INFO] [stdout]  78 |     where
[INFO] [stdout]  79 |         T: SchemaSerialize,
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ required by this bound in `StreamSerializer::<O>::serialize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/internal/types/struct_type.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         { Type::build().seq_type(None, TypeId::FIELD_TYPE) };
[INFO] [stdout]    |         ^^                                                ^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout]  1 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_braces)]` implied by `#[warn(warnings)]`
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 85 -         { Type::build().seq_type(None, TypeId::FIELD_TYPE) };
[INFO] [stdout] 85 +         Type::build().seq_type(None, TypeId::FIELD_TYPE);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `serde_bytes::Bytes<'_>: SchemaSerialize` is not satisfied
[INFO] [stdout]    --> tests/ser.rs:544:28
[INFO] [stdout]     |
[INFO] [stdout] 544 |         stream.serialize::<Option<Bytes>>(&None).unwrap();
[INFO] [stdout]     |                ---------   ^^^^^^^^^^^^^ the trait `SchemaSerialize` is not implemented for `serde_bytes::Bytes<'_>`
[INFO] [stdout]     |                |
[INFO] [stdout]     |                required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `SchemaSerialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]               (T0, T1, T2, T3, T4, T5)
[INFO] [stdout]             and 78 others
[INFO] [stdout]     = note: required for `std::option::Option<serde_bytes::Bytes<'_>>` to implement `SchemaSerialize`
[INFO] [stdout] note: required by a bound in `StreamSerializer::<O>::serialize`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/ser/mod.rs:79:12
[INFO] [stdout]     |
[INFO] [stdout]  77 |     pub fn serialize<T>(&mut self, value: &T) -> Result<(), Error>
[INFO] [stdout]     |            --------- required by a bound in this associated function
[INFO] [stdout]  78 |     where
[INFO] [stdout]  79 |         T: SchemaSerialize,
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ required by this bound in `StreamSerializer::<O>::serialize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `serde_bytes::Bytes<'_>: SchemaSerialize` is not satisfied
[INFO] [stdout]    --> tests/ser.rs:563:26
[INFO] [stdout]     |
[INFO] [stdout] 563 |         stream.serialize(&Some(Bytes::new(&[0x1, 0x2]))).unwrap();
[INFO] [stdout]     |                --------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `SchemaSerialize` is not implemented for `serde_bytes::Bytes<'_>`
[INFO] [stdout]     |                |
[INFO] [stdout]     |                required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `SchemaSerialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]               (T0, T1, T2, T3, T4, T5)
[INFO] [stdout]             and 78 others
[INFO] [stdout]     = note: required for `std::option::Option<serde_bytes::Bytes<'_>>` to implement `SchemaSerialize`
[INFO] [stdout] note: required by a bound in `StreamSerializer::<O>::serialize`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/ser/mod.rs:79:12
[INFO] [stdout]     |
[INFO] [stdout]  77 |     pub fn serialize<T>(&mut self, value: &T) -> Result<(), Error>
[INFO] [stdout]     |            --------- required by a bound in this associated function
[INFO] [stdout]  78 |     where
[INFO] [stdout]  79 |         T: SchemaSerialize,
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ required by this bound in `StreamSerializer::<O>::serialize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:41:58
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 write!(f, "{}: {}", ::std::error::Error::description(self), msg)
[INFO] [stdout]    |                                                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gob` (test "ser") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/internal/ser/serialize_wire_types.rs:110:29
[INFO] [stdout]     |
[INFO] [stdout] 110 |                         let mut ser = FieldValueSerializer {
[INFO] [stdout]     |                             ----^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2a936a69d5d47101667a4eb35a3e27261e3a6b188cb01f80011d1db84c72470f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a936a69d5d47101667a4eb35a3e27261e3a6b188cb01f80011d1db84c72470f", kill_on_drop: false }`
[INFO] [stdout] 2a936a69d5d47101667a4eb35a3e27261e3a6b188cb01f80011d1db84c72470f
