[INFO] fetching crate flapigen 0.6.0...
[INFO] checking flapigen-0.6.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate flapigen 0.6.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate flapigen 0.6.0 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 flapigen 0.6.0
[INFO] finished tweaking crates.io crate flapigen 0.6.0
[INFO] tweaked toml for crates.io crate flapigen 0.6.0 written to /workspace/builds/worker-4-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 64 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding env_logger v0.10.2 (latest: v0.11.3)
[INFO] [stderr]       Adding fixedbitset v0.4.2 (latest: v0.5.6)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding jni-sys v0.3.0 (latest: v0.4.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding pulldown-cmark v0.9.6 (latest: v0.10.2)
[INFO] [stderr]       Adding strum v0.24.1 (latest: v0.26.2)
[INFO] [stderr]       Adding strum_macros v0.24.3 (latest: v0.26.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding which v4.4.2 (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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 957b0068279d943513dc3556decd88b454ad7e129793781f368d85dcede70c5a
[INFO] running `Command { std: "docker" "start" "-a" "957b0068279d943513dc3556decd88b454ad7e129793781f368d85dcede70c5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "957b0068279d943513dc3556decd88b454ad7e129793781f368d85dcede70c5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "957b0068279d943513dc3556decd88b454ad7e129793781f368d85dcede70c5a", kill_on_drop: false }`
[INFO] [stdout] 957b0068279d943513dc3556decd88b454ad7e129793781f368d85dcede70c5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 50e210026d78700c3cc786fd08d251ae9f704004a62c37009976490a4ada7293
[INFO] running `Command { std: "docker" "start" "-a" "50e210026d78700c3cc786fd08d251ae9f704004a62c37009976490a4ada7293", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling pulldown-cmark v0.9.6
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking home v0.5.9
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking jni-sys v0.3.0
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking which v4.4.2
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling flapigen v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stdout] warning: the item `ToTokens` is imported redundantly
[INFO] [stdout]    --> src/code_parse.rs:819:9
[INFO] [stdout]     |
[INFO] [stdout] 817 |     use super::*;
[INFO] [stdout]     |         -------- the item `ToTokens` is already imported here
[INFO] [stdout] 818 |     use crate::error::panic_on_syn_error;
[INFO] [stdout] 819 |     use quote::ToTokens;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RustTypeS` is imported redundantly
[INFO] [stdout]  --> src/typemap/ast/tests.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `RustTypeS` is already imported here
[INFO] [stdout] 2 | use crate::typemap::ty::RustTypeS;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `GenericTypeConv` is imported redundantly
[INFO] [stdout]  --> src/typemap/typemap_macro/tests.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `GenericTypeConv` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 4 |     typemap::{ast::GenericTypeConv, FROM_VAR_TEMPLATE, TO_VAR_TEMPLATE, TO_VAR_TYPE_TEMPLATE},
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Span` is imported redundantly
[INFO] [stdout]     --> src/typemap.rs:1261:9
[INFO] [stdout]      |
[INFO] [stdout] 1259 |     use super::*;
[INFO] [stdout]      |         -------- the item `Span` is already imported here
[INFO] [stdout] 1260 |     use crate::{source_registry::SourceRegistry, types::SelfTypeDesc, SourceCode};
[INFO] [stdout] 1261 |     use proc_macro2::Span;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `display` is never used
[INFO] [stdout]   --> src/typemap/utils.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub(crate) trait ForeignTypeInfoT {
[INFO] [stdout]    |                  ---------------- method in this trait
[INFO] [stdout] 26 |     fn display(&self) -> &str;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `output` is never used
[INFO] [stdout]   --> src/typemap/utils.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub(crate) trait ForeignMethodSignature {
[INFO] [stdout]    |                  ---------------------- method in this trait
[INFO] [stdout] 40 |     type FI: ForeignTypeInfoT;
[INFO] [stdout] 41 |     fn output(&self) -> &dyn ForeignTypeInfoT;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `display` is never used
[INFO] [stdout]   --> src/typemap/utils.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub(crate) trait ForeignTypeInfoT {
[INFO] [stdout]    |                  ---------------- method in this trait
[INFO] [stdout] 26 |     fn display(&self) -> &str;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `output` is never used
[INFO] [stdout]   --> src/typemap/utils.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub(crate) trait ForeignMethodSignature {
[INFO] [stdout]    |                  ---------------------- method in this trait
[INFO] [stdout] 40 |     type FI: ForeignTypeInfoT;
[INFO] [stdout] 41 |     fn output(&self) -> &dyn ForeignTypeInfoT;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.65s
[INFO] running `Command { std: "docker" "inspect" "50e210026d78700c3cc786fd08d251ae9f704004a62c37009976490a4ada7293", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50e210026d78700c3cc786fd08d251ae9f704004a62c37009976490a4ada7293", kill_on_drop: false }`
[INFO] [stdout] 50e210026d78700c3cc786fd08d251ae9f704004a62c37009976490a4ada7293