[INFO] fetching crate rcap 0.1.4...
[INFO] checking rcap-0.1.4 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate rcap 0.1.4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate rcap 0.1.4 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rcap 0.1.4
[INFO] finished tweaking crates.io crate rcap 0.1.4
[INFO] tweaked toml for crates.io crate rcap 0.1.4 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80d0a5fc2471b81d718aeed0956181018149772b2739d570f4608c35a7488330
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "80d0a5fc2471b81d718aeed0956181018149772b2739d570f4608c35a7488330", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80d0a5fc2471b81d718aeed0956181018149772b2739d570f4608c35a7488330", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80d0a5fc2471b81d718aeed0956181018149772b2739d570f4608c35a7488330", kill_on_drop: false }`
[INFO] [stdout] 80d0a5fc2471b81d718aeed0956181018149772b2739d570f4608c35a7488330
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ff1fd5c8676e1bc5a28018dde4719f243b34bbfd6e3193d2c2d4f88f5c22851
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2ff1fd5c8676e1bc5a28018dde4719f243b34bbfd6e3193d2c2d4f88f5c22851", kill_on_drop: false }`
[INFO] [stderr]    Compiling rcap v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:998:30
[INFO] [stdout]     |
[INFO] [stdout] 998 |                        arg3: __gnuc_va_list, arg4: *mut ::libc::c_int)
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1001:31
[INFO] [stdout]      |
[INFO] [stdout] 1001 |                         arg3: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1048:28
[INFO] [stdout]      |
[INFO] [stdout] 1048 |                     __arg: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1049:60
[INFO] [stdout]      |
[INFO] [stdout] 1049 |     pub fn vprintf(__format: *const ::libc::c_char, __arg: __gnuc_va_list)
[INFO] [stdout]      |                                                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1052:28
[INFO] [stdout]      |
[INFO] [stdout] 1052 |                     __arg: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1056:62
[INFO] [stdout]      |
[INFO] [stdout] 1056 |                      __format: *const ::libc::c_char, __arg: __gnuc_va_list)
[INFO] [stdout]      |                                                              ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1059:28
[INFO] [stdout]      |
[INFO] [stdout] 1059 |                     __arg: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1068:27
[INFO] [stdout]      |
[INFO] [stdout] 1068 |                    __arg: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1069:59
[INFO] [stdout]      |
[INFO] [stdout] 1069 |     pub fn vscanf(__format: *const ::libc::c_char, __arg: __gnuc_va_list)
[INFO] [stdout]      |                                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1072:60
[INFO] [stdout]      |
[INFO] [stdout] 1072 |                    __format: *const ::libc::c_char, __arg: __gnuc_va_list)
[INFO] [stdout]      |                                                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]    --> src/lib.rs:998:30
[INFO] [stdout]     |
[INFO] [stdout] 998 |                        arg3: __gnuc_va_list, arg4: *mut ::libc::c_int)
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout]     = help: consider passing a pointer to the array
[INFO] [stdout]     = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1001:31
[INFO] [stdout]      |
[INFO] [stdout] 1001 |                         arg3: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                               ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1048:28
[INFO] [stdout]      |
[INFO] [stdout] 1048 |                     __arg: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1049:60
[INFO] [stdout]      |
[INFO] [stdout] 1049 |     pub fn vprintf(__format: *const ::libc::c_char, __arg: __gnuc_va_list)
[INFO] [stdout]      |                                                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1052:28
[INFO] [stdout]      |
[INFO] [stdout] 1052 |                     __arg: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1056:62
[INFO] [stdout]      |
[INFO] [stdout] 1056 |                      __format: *const ::libc::c_char, __arg: __gnuc_va_list)
[INFO] [stdout]      |                                                              ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1059:28
[INFO] [stdout]      |
[INFO] [stdout] 1059 |                     __arg: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1068:27
[INFO] [stdout]      |
[INFO] [stdout] 1068 |                    __arg: __gnuc_va_list) -> ::libc::c_int;
[INFO] [stdout]      |                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1069:59
[INFO] [stdout]      |
[INFO] [stdout] 1069 |     pub fn vscanf(__format: *const ::libc::c_char, __arg: __gnuc_va_list)
[INFO] [stdout]      |                                                           ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `[Struct___va_list_tag; 1]`, which is not FFI-safe
[INFO] [stdout]     --> src/lib.rs:1072:60
[INFO] [stdout]      |
[INFO] [stdout] 1072 |                    __format: *const ::libc::c_char, __arg: __gnuc_va_list)
[INFO] [stdout]      |                                                            ^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider passing a pointer to the array
[INFO] [stdout]      = note: passing raw arrays by value is not FFI-safe
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `Command { std: "docker" "inspect" "2ff1fd5c8676e1bc5a28018dde4719f243b34bbfd6e3193d2c2d4f88f5c22851", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ff1fd5c8676e1bc5a28018dde4719f243b34bbfd6e3193d2c2d4f88f5c22851", kill_on_drop: false }`
[INFO] [stdout] 2ff1fd5c8676e1bc5a28018dde4719f243b34bbfd6e3193d2c2d4f88f5c22851