[INFO] fetching crate fribidi-sys 0.1.0...
[INFO] checking fribidi-sys-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate fribidi-sys 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate fribidi-sys 0.1.0 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 fribidi-sys 0.1.0
[INFO] finished tweaking crates.io crate fribidi-sys 0.1.0
[INFO] tweaked toml for crates.io crate fribidi-sys 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate fribidi-sys 0.1.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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 which v3.1.1
[INFO] [stderr]   Downloaded shlex v0.1.1
[INFO] [stderr]   Downloaded cexpr v0.4.0
[INFO] [stderr]   Downloaded libloading v0.5.2
[INFO] [stderr]   Downloaded quote v1.0.23
[INFO] [stderr]   Downloaded clang-sys v0.29.3
[INFO] [stderr]   Downloaded nom v5.1.2
[INFO] [stderr]   Downloaded regex-syntax v0.6.28
[INFO] [stderr]   Downloaded regex v1.7.1
[INFO] [stderr]   Downloaded bindgen v0.53.3
[INFO] [stderr]   Downloaded libc v0.2.139
[INFO] [stderr]   Downloaded cc v1.0.78
[INFO] [stderr]   Downloaded unicode-ident v1.0.6
[INFO] [stderr]   Downloaded proc-macro2 v1.0.49
[INFO] [stderr]   Downloaded pkg-config v0.3.26
[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] 386072a1ca42e1b88964bc957efb035343b9ea8e12f0498cf5775a2fc619e0bb
[INFO] running `Command { std: "docker" "start" "-a" "386072a1ca42e1b88964bc957efb035343b9ea8e12f0498cf5775a2fc619e0bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "386072a1ca42e1b88964bc957efb035343b9ea8e12f0498cf5775a2fc619e0bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "386072a1ca42e1b88964bc957efb035343b9ea8e12f0498cf5775a2fc619e0bb", kill_on_drop: false }`
[INFO] [stdout] 386072a1ca42e1b88964bc957efb035343b9ea8e12f0498cf5775a2fc619e0bb
[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] f2fb2a3456f02c9741af476fec1aa9704ee6501fb35ffab7515fbe2867d5c1f9
[INFO] running `Command { std: "docker" "start" "-a" "f2fb2a3456f02c9741af476fec1aa9704ee6501fb35ffab7515fbe2867d5c1f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling bindgen v0.53.3
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling regex v1.7.1
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling fribidi-sys v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/fribidi_bindings.rs:288:19
[INFO] [stdout]     |
[INFO] [stdout] 288 |         unsafe { &(*(::std::ptr::null::<__fsid_t>())).__val as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.44s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "f2fb2a3456f02c9741af476fec1aa9704ee6501fb35ffab7515fbe2867d5c1f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2fb2a3456f02c9741af476fec1aa9704ee6501fb35ffab7515fbe2867d5c1f9", kill_on_drop: false }`
[INFO] [stdout] f2fb2a3456f02c9741af476fec1aa9704ee6501fb35ffab7515fbe2867d5c1f9