[INFO] fetching crate redact-composer-synthesis 0.1.1...
[INFO] building redact-composer-synthesis-0.1.1 against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] extracting crate redact-composer-synthesis 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate redact-composer-synthesis 0.1.1 on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate redact-composer-synthesis 0.1.1
[INFO] finished tweaking crates.io crate redact-composer-synthesis 0.1.1
[INFO] tweaked toml for crates.io crate redact-composer-synthesis 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 50 packages to latest compatible versions
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.12)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded midly v0.5.3
[INFO] [stderr]   Downloaded redact-composer-derive v0.1.2
[INFO] [stderr]   Downloaded redact-composer-midi v0.1.9
[INFO] [stderr]   Downloaded typetag v0.2.20
[INFO] [stderr]   Downloaded redact-composer-musical v0.3.4
[INFO] [stderr]   Downloaded redact-composer-core v0.2.5
[INFO] [stderr]   Downloaded rustysynth v1.3.5
[INFO] [stderr]   Downloaded typetag-impl v0.2.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d8f02cccdd984eda59f3ac6e97449c2e5f78f5eff3927d766ee189ff40dea30
[INFO] running `Command { std: "docker" "start" "-a" "4d8f02cccdd984eda59f3ac6e97449c2e5f78f5eff3927d766ee189ff40dea30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d8f02cccdd984eda59f3ac6e97449c2e5f78f5eff3927d766ee189ff40dea30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d8f02cccdd984eda59f3ac6e97449c2e5f78f5eff3927d766ee189ff40dea30", kill_on_drop: false }`
[INFO] [stdout] 4d8f02cccdd984eda59f3ac6e97449c2e5f78f5eff3927d766ee189ff40dea30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22c892884295293a770cde8b5064f16bdc84452398370b8f830a30e64c32ceea
[INFO] running `Command { std: "docker" "start" "-a" "22c892884295293a770cde8b5064f16bdc84452398370b8f830a30e64c32ceea", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling midly v0.5.3
[INFO] [stderr]    Compiling rustysynth v1.3.5
[INFO] [stderr]    Compiling hound v3.5.1
[INFO] [stderr]    Compiling twox-hash v1.6.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling redact-composer-derive v0.1.2
[INFO] [stderr]    Compiling redact-composer-core v0.2.5
[INFO] [stderr]    Compiling redact-composer-midi v0.1.9
[INFO] [stderr]    Compiling redact-composer-synthesis v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:104:10
[INFO] [stdout]     |
[INFO] [stdout] 104 |         &'a self,
[INFO] [stdout]     |          ^^ these lifetimes flow to the output
[INFO] [stdout] 105 |         content: &'a S,
[INFO] [stdout]     |                   ^^ these lifetimes flow to the output
[INFO] [stdout] 106 |     ) -> SF2SynthesisRequest<'_, S> {
[INFO] [stdout]     |                              -- the lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 106 -     ) -> SF2SynthesisRequest<'_, S> {
[INFO] [stdout] 106 +     ) -> SF2SynthesisRequest<'a, S> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:128:29
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn synthesize_with<'a>(&'a self, synth: &'a SF2Synthesizer) -> SF2SynthesisRequest<'_, M> {
[INFO] [stdout]     |                             ^^               ^^ these lifetimes flow to the output     -- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 128 -     fn synthesize_with<'a>(&'a self, synth: &'a SF2Synthesizer) -> SF2SynthesisRequest<'_, M> {
[INFO] [stdout] 128 +     fn synthesize_with<'a>(&'a self, synth: &'a SF2Synthesizer) -> SF2SynthesisRequest<'a, M> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.42s
[INFO] running `Command { std: "docker" "inspect" "22c892884295293a770cde8b5064f16bdc84452398370b8f830a30e64c32ceea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22c892884295293a770cde8b5064f16bdc84452398370b8f830a30e64c32ceea", kill_on_drop: false }`
[INFO] [stdout] 22c892884295293a770cde8b5064f16bdc84452398370b8f830a30e64c32ceea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf15be2ae3502423031dd0a36db08e798ead7bb0fdb109ef14519d79a735bf61
[INFO] running `Command { std: "docker" "start" "-a" "cf15be2ae3502423031dd0a36db08e798ead7bb0fdb109ef14519d79a735bf61", kill_on_drop: false }`
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling inventory v0.3.20
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling typetag-impl v0.2.20
[INFO] [stderr]    Compiling redact-composer-musical v0.3.4
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:104:10
[INFO] [stdout]     |
[INFO] [stdout] 104 |         &'a self,
[INFO] [stdout]     |          ^^ these lifetimes flow to the output
[INFO] [stdout] 105 |         content: &'a S,
[INFO] [stdout]     |                   ^^ these lifetimes flow to the output
[INFO] [stdout] 106 |     ) -> SF2SynthesisRequest<'_, S> {
[INFO] [stdout]     |                              -- the lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 106 -     ) -> SF2SynthesisRequest<'_, S> {
[INFO] [stdout] 106 +     ) -> SF2SynthesisRequest<'a, S> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:128:29
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn synthesize_with<'a>(&'a self, synth: &'a SF2Synthesizer) -> SF2SynthesisRequest<'_, M> {
[INFO] [stdout]     |                             ^^               ^^ these lifetimes flow to the output     -- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 128 -     fn synthesize_with<'a>(&'a self, synth: &'a SF2Synthesizer) -> SF2SynthesisRequest<'_, M> {
[INFO] [stdout] 128 +     fn synthesize_with<'a>(&'a self, synth: &'a SF2Synthesizer) -> SF2SynthesisRequest<'a, M> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling erased-serde v0.4.6
[INFO] [stderr]    Compiling typetag v0.2.20
[INFO] [stderr]    Compiling redact-composer-synthesis v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:104:10
[INFO] [stdout]     |
[INFO] [stdout] 104 |         &'a self,
[INFO] [stdout]     |          ^^ these lifetimes flow to the output
[INFO] [stdout] 105 |         content: &'a S,
[INFO] [stdout]     |                   ^^ these lifetimes flow to the output
[INFO] [stdout] 106 |     ) -> SF2SynthesisRequest<'_, S> {
[INFO] [stdout]     |                              -- the lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 106 -     ) -> SF2SynthesisRequest<'_, S> {
[INFO] [stdout] 106 +     ) -> SF2SynthesisRequest<'a, S> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:128:29
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn synthesize_with<'a>(&'a self, synth: &'a SF2Synthesizer) -> SF2SynthesisRequest<'_, M> {
[INFO] [stdout]     |                             ^^               ^^ these lifetimes flow to the output     -- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             these lifetimes flow to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 128 -     fn synthesize_with<'a>(&'a self, synth: &'a SF2Synthesizer) -> SF2SynthesisRequest<'_, M> {
[INFO] [stdout] 128 +     fn synthesize_with<'a>(&'a self, synth: &'a SF2Synthesizer) -> SF2SynthesisRequest<'a, M> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 9.55s
[INFO] running `Command { std: "docker" "inspect" "cf15be2ae3502423031dd0a36db08e798ead7bb0fdb109ef14519d79a735bf61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf15be2ae3502423031dd0a36db08e798ead7bb0fdb109ef14519d79a735bf61", kill_on_drop: false }`
[INFO] [stdout] cf15be2ae3502423031dd0a36db08e798ead7bb0fdb109ef14519d79a735bf61