[INFO] fetching crate parze 0.7.3...
[INFO] building parze-0.7.3 against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] extracting crate parze 0.7.3 into /workspace/builds/worker-2-tc2/source
[INFO] building parze-0.7.3 against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] extracting crate parze 0.7.3 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate parze 0.7.3 on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate parze 0.7.3
[INFO] finished tweaking crates.io crate parze 0.7.3
[INFO] tweaked toml for crates.io crate parze 0.7.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate parze 0.7.3 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parze-declare v0.2.0
[INFO] [stderr]   Downloaded pom v3.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b7822fddab722b92502143203cc97bc43e7a6c2e821a2f696cef9e81d8d6ab2
[INFO] running `Command { std: "docker" "start" "-a" "8b7822fddab722b92502143203cc97bc43e7a6c2e821a2f696cef9e81d8d6ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b7822fddab722b92502143203cc97bc43e7a6c2e821a2f696cef9e81d8d6ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b7822fddab722b92502143203cc97bc43e7a6c2e821a2f696cef9e81d8d6ab2", kill_on_drop: false }`
[INFO] [stdout] 8b7822fddab722b92502143203cc97bc43e7a6c2e821a2f696cef9e81d8d6ab2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a6238310f8f0da0e1a147785d1d2a24c0c82b97b1be34d28475475944dab87c
[INFO] running `Command { std: "docker" "start" "-a" "5a6238310f8f0da0e1a147785d1d2a24c0c82b97b1be34d28475475944dab87c", kill_on_drop: false }`
[INFO] [stderr]    Compiling parze-declare v0.2.0
[INFO] [stderr]    Compiling parze v0.7.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/lib.rs:300:17
[INFO] [stdout]     |
[INFO] [stdout] 300 |             for i in 0.. {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/fail.rs:16:22
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl<E> Fail<E> {
[INFO] [stdout]    |      - expected type parameter
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn map_err<G>(self, f: impl Fn(E) -> G) -> Fail<G> {
[INFO] [stdout]    |                    - found type parameter
[INFO] [stdout] 16 |         Self(self.0, f(self.1))
[INFO] [stdout]    |         ----         ^^^^^^^^^ expected type parameter `E`, found type parameter `G`
[INFO] [stdout]    |         |
[INFO] [stdout]    |         arguments to this function are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type parameter `E`
[INFO] [stdout]               found type parameter `G`
[INFO] [stdout]    = note: a type parameter was expected, but a different one was found; you might be missing a type parameter or trait bound
[INFO] [stdout]    = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
[INFO] [stdout] note: tuple struct defined here
[INFO] [stdout]   --> src/fail.rs:4:12
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub struct Fail<E>(usize, E);
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/fail.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 6  | impl<E> Fail<E> {
[INFO] [stdout]    |      - found type parameter
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn map_err<G>(self, f: impl Fn(E) -> G) -> Fail<G> {
[INFO] [stdout]    |                    - expected type parameter       ------- expected `Fail<G>` because of return type
[INFO] [stdout] 16 |         Self(self.0, f(self.1))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ expected `Fail<G>`, found `Fail<E>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Fail<G>`
[INFO] [stdout]               found struct `Fail<E>`
[INFO] [stdout]    = note: a type parameter was expected, but a different one was found; you might be missing a type parameter or trait bound
[INFO] [stdout]    = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `parze` (lib) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "5a6238310f8f0da0e1a147785d1d2a24c0c82b97b1be34d28475475944dab87c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a6238310f8f0da0e1a147785d1d2a24c0c82b97b1be34d28475475944dab87c", kill_on_drop: false }`
[INFO] [stdout] 5a6238310f8f0da0e1a147785d1d2a24c0c82b97b1be34d28475475944dab87c