[INFO] fetching crate polyhorn-ios 0.4.0...
[INFO] checking polyhorn-ios-0.4.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate polyhorn-ios 0.4.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate polyhorn-ios 0.4.0 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 polyhorn-ios 0.4.0
[INFO] finished tweaking crates.io crate polyhorn-ios 0.4.0
[INFO] tweaked toml for crates.io crate polyhorn-ios 0.4.0 written to /workspace/builds/worker-2-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]     Updating crates.io index
[INFO] [stderr]      Locking 121 packages
[INFO] [stderr]       Adding approx v0.3.2 (latest: v0.5.1)
[INFO] [stderr]       Adding arrayvec v0.5.2 (latest: v0.7.4)
[INFO] [stderr]       Adding as-any v0.2.1 (latest: v0.3.1)
[INFO] [stderr]       Adding base64 v0.12.3 (latest: v0.22.0)
[INFO] [stderr]       Adding bindgen v0.55.1 (latest: v0.69.4)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bytes v0.5.6 (latest: v1.6.0)
[INFO] [stderr]       Adding cexpr v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding data-url v0.1.1 (latest: v0.3.1)
[INFO] [stderr]       Adding env_logger v0.7.1 (latest: v0.11.3)
[INFO] [stderr]       Adding float-cmp v0.5.3 (latest: v0.9.0)
[INFO] [stderr]       Adding fsize v0.1.1 (latest: v1.0.0)
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding humantime v1.3.0 (latest: v2.1.0)
[INFO] [stderr]       Adding kurbo v0.6.3 (latest: v0.11.0)
[INFO] [stderr]       Adding malloc_buf v0.0.6 (latest: v1.0.0)
[INFO] [stderr]       Adding nom v5.1.3 (latest: v7.1.3)
[INFO] [stderr]       Adding ordered-float v1.1.1 (latest: v4.2.0)
[INFO] [stderr]       Adding palette v0.5.0 (latest: v0.7.5)
[INFO] [stderr]       Adding palette_derive v0.5.0 (latest: v0.7.5)
[INFO] [stderr]       Adding peeking_take_while v0.1.2 (latest: v1.0.0)
[INFO] [stderr]       Adding pico-args v0.3.4 (latest: v0.5.0)
[INFO] [stderr]       Adding pin-project-lite v0.1.12 (latest: v0.2.14)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding rctree v0.3.3 (latest: v0.6.0)
[INFO] [stderr]       Adding roxmltree v0.13.1 (latest: v0.19.0)
[INFO] [stderr]       Adding shlex v0.1.1 (latest: v1.3.0)
[INFO] [stderr]       Adding siphasher v0.2.3 (latest: v1.0.1)
[INFO] [stderr]       Adding smart-default v0.6.0 (latest: v0.7.1)
[INFO] [stderr]       Adding strsim v0.8.0 (latest: v0.11.1)
[INFO] [stderr]       Adding strum v0.19.5 (latest: v0.26.2)
[INFO] [stderr]       Adding strum_macros v0.19.4 (latest: v0.26.2)
[INFO] [stderr]       Adding svgtypes v0.5.0 (latest: v0.15.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding tokio v0.2.25 (latest: v1.37.0)
[INFO] [stderr]       Adding usvg v0.11.0 (latest: v0.41.0)
[INFO] [stderr]       Adding which v3.1.1 (latest: v6.0.1)
[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 usvg v0.11.0
[INFO] [stderr]   Downloaded polyhorn-ui-macros v0.4.0
[INFO] [stderr]   Downloaded as-any v0.2.1
[INFO] [stderr]   Downloaded fsize v0.1.1
[INFO] [stderr]   Downloaded polyhorn-build-android v0.4.0
[INFO] [stderr]   Downloaded bindgen v0.55.1
[INFO] [stderr]   Downloaded polyhorn-build-ios v0.4.0
[INFO] [stderr]   Downloaded polyhorn-build v0.4.1
[INFO] [stderr]   Downloaded polyhorn-ios-sys v0.4.0
[INFO] [stderr]   Downloaded casco v0.4.0
[INFO] [stderr]   Downloaded polyhorn-core v0.4.0
[INFO] [stderr]   Downloaded data-url v0.1.1
[INFO] [stderr]   Downloaded kurbo v0.6.3
[INFO] [stderr]   Downloaded polyhorn-ui v0.4.0
[INFO] [stderr]   Downloaded polyhorn-yoga v0.3.4
[INFO] [stderr]   Downloaded polyhorn-macros v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8cbc31a2ca895f7bfe3b2daf281712fd61ecf8b344b0e2bfa6082d18d2c6f962
[INFO] running `Command { std: "docker" "start" "-a" "8cbc31a2ca895f7bfe3b2daf281712fd61ecf8b344b0e2bfa6082d18d2c6f962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cbc31a2ca895f7bfe3b2daf281712fd61ecf8b344b0e2bfa6082d18d2c6f962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cbc31a2ca895f7bfe3b2daf281712fd61ecf8b344b0e2bfa6082d18d2c6f962", kill_on_drop: false }`
[INFO] [stdout] 8cbc31a2ca895f7bfe3b2daf281712fd61ecf8b344b0e2bfa6082d18d2c6f962
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 004ae5cf9e457998a64f874765cd8fb7fb9259ce89a2e499845f0b56495c505a
[INFO] running `Command { std: "docker" "start" "-a" "004ae5cf9e457998a64f874765cd8fb7fb9259ce89a2e499845f0b56495c505a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling nom v5.1.3
[INFO] [stderr]    Compiling libloading v0.8.3
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling bindgen v0.55.1
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling futures-core v0.3.30
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-task v0.3.30
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling polyhorn-build-android v0.4.0
[INFO] [stderr]    Compiling polyhorn-build-ios v0.4.0
[INFO] [stderr]    Compiling clang-sys v1.7.0
[INFO] [stderr]    Compiling miniz_oxide v0.7.2
[INFO] [stderr]    Compiling float-cmp v0.5.3
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling xmlparser v0.13.6
[INFO] [stderr]    Compiling data-url v0.1.1
[INFO] [stderr]    Compiling polyhorn-build v0.4.1
[INFO] [stderr]    Compiling svgtypes v0.5.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling roxmltree v0.13.1
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling kurbo v0.6.3
[INFO] [stderr]    Compiling flate2 v1.0.28
[INFO] [stderr]    Compiling simplecss v0.2.1
[INFO] [stderr]    Compiling xmlwriter v0.1.0
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling pico-args v0.3.4
[INFO] [stderr]    Compiling rctree v0.3.3
[INFO] [stderr]     Checking malloc_buf v0.0.6
[INFO] [stderr]    Compiling usvg v0.11.0
[INFO] [stderr]    Compiling polyhorn-ios-sys v0.4.0
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling strum v0.19.5
[INFO] [stderr]     Checking objc v0.2.7
[INFO] [stderr]     Checking fsize v0.1.1
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]    Compiling polyhorn-macros v0.4.0
[INFO] [stderr]     Checking as-any v0.2.1
[INFO] [stderr]     Checking dispatch v0.2.0
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling strum_macros v0.19.4
[INFO] [stderr]    Compiling smart-default v0.6.0
[INFO] [stderr]    Compiling casco v0.4.0
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking polyhorn-core v0.4.0
[INFO] [stderr]    Compiling polyhorn-yoga v0.3.4
[INFO] [stderr]     Checking polyhorn-ui v0.4.0
[INFO] [stderr]    Compiling polyhorn-ui-macros v0.4.0
[INFO] [stderr]     Checking polyhorn-ios v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `drop` is imported redundantly
[INFO] [stdout]  --> src/raw/queue.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::mem::drop;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `drop` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `drop` is imported redundantly
[INFO] [stdout]  --> src/raw/queue.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::mem::drop;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `drop` 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 43.51s
[INFO] running `Command { std: "docker" "inspect" "004ae5cf9e457998a64f874765cd8fb7fb9259ce89a2e499845f0b56495c505a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "004ae5cf9e457998a64f874765cd8fb7fb9259ce89a2e499845f0b56495c505a", kill_on_drop: false }`
[INFO] [stdout] 004ae5cf9e457998a64f874765cd8fb7fb9259ce89a2e499845f0b56495c505a