[INFO] fetching crate uniffi_udl 0.25.2...
[INFO] checking uniffi_udl-0.25.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate uniffi_udl 0.25.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate uniffi_udl 0.25.2 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uniffi_udl 0.25.2
[INFO] finished tweaking crates.io crate uniffi_udl 0.25.2
[INFO] tweaked toml for crates.io crate uniffi_udl 0.25.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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 29 packages
[INFO] [stderr]       Adding cargo_metadata v0.15.4 (latest: v0.18.1)
[INFO] [stderr]       Adding siphasher v0.3.11 (latest: v1.0.1)
[INFO] [stderr]       Adding uniffi_checksum_derive v0.25.3 (latest: v0.27.1)
[INFO] [stderr]       Adding uniffi_meta v0.25.2 (latest: v0.27.1)
[INFO] [stderr]       Adding uniffi_testing v0.25.2 (latest: v0.27.1)
[INFO] [stderr]       Adding weedle2 v4.0.0 (latest: v5.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uniffi_checksum_derive v0.25.3
[INFO] [stderr]   Downloaded weedle2 v4.0.0
[INFO] [stderr]   Downloaded uniffi_meta v0.25.2
[INFO] [stderr]   Downloaded uniffi_testing v0.25.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c6172bd2d6bb26445e5a40650c4df10b7891b3f428634e11a5e8243bf3c6dff
[INFO] running `Command { std: "docker" "start" "-a" "6c6172bd2d6bb26445e5a40650c4df10b7891b3f428634e11a5e8243bf3c6dff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c6172bd2d6bb26445e5a40650c4df10b7891b3f428634e11a5e8243bf3c6dff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c6172bd2d6bb26445e5a40650c4df10b7891b3f428634e11a5e8243bf3c6dff", kill_on_drop: false }`
[INFO] [stdout] 6c6172bd2d6bb26445e5a40650c4df10b7891b3f428634e11a5e8243bf3c6dff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3eb9f31ef98df07de20f74672f849806c838dba2da50a4fac9fa337470b32663
[INFO] running `Command { std: "docker" "start" "-a" "3eb9f31ef98df07de20f74672f849806c838dba2da50a4fac9fa337470b32663", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling fs-err v2.11.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling uniffi_checksum_derive v0.25.3
[INFO] [stderr]     Checking weedle2 v4.0.0
[INFO] [stderr]     Checking uniffi_meta v0.25.2
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking cargo-platform v0.1.8
[INFO] [stderr]     Checking cargo_metadata v0.15.4
[INFO] [stderr]     Checking uniffi_testing v0.25.2
[INFO] [stderr]     Checking uniffi_udl v0.25.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/finder.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/finder.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.57s
[INFO] running `Command { std: "docker" "inspect" "3eb9f31ef98df07de20f74672f849806c838dba2da50a4fac9fa337470b32663", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3eb9f31ef98df07de20f74672f849806c838dba2da50a4fac9fa337470b32663", kill_on_drop: false }`
[INFO] [stdout] 3eb9f31ef98df07de20f74672f849806c838dba2da50a4fac9fa337470b32663