[INFO] fetching crate linkbot 0.0.2...
[INFO] checking linkbot-0.0.2 against try#05c8870159e4f328578a970e125aa76d24f03b56 for pr-76219
[INFO] extracting crate linkbot 0.0.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate linkbot 0.0.2 on toolchain 05c8870159e4f328578a970e125aa76d24f03b56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linkbot 0.0.2
[INFO] finished tweaking crates.io crate linkbot 0.0.2
[INFO] tweaked toml for crates.io crate linkbot 0.0.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+05c8870159e4f328578a970e125aa76d24f03b56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4193453fd77d9d707a4a13a365b299e5c38a931e2916bdb6263d8eb6e1fc8736
[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" "4193453fd77d9d707a4a13a365b299e5c38a931e2916bdb6263d8eb6e1fc8736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4193453fd77d9d707a4a13a365b299e5c38a931e2916bdb6263d8eb6e1fc8736", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4193453fd77d9d707a4a13a365b299e5c38a931e2916bdb6263d8eb6e1fc8736", kill_on_drop: false }`
[INFO] [stdout] 4193453fd77d9d707a4a13a365b299e5c38a931e2916bdb6263d8eb6e1fc8736
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+05c8870159e4f328578a970e125aa76d24f03b56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e88c2245198ee9398e29b35df7c4db164ff37f472279de6b734fa35eba7c48a
[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" "8e88c2245198ee9398e29b35df7c4db164ff37f472279de6b734fa35eba7c48a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking linkbot v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:65:27
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub type ButtonCallback = FnMut(Button, ButtonState, u32);
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Button, ButtonState, u32)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/lib.rs:306:1
[INFO] [stdout]     |
[INFO] [stdout] 306 | / extern {
[INFO] [stdout] 307 | |     fn linkbotFromSerialId(serial_id: *const u8) -> *mut libc::c_void;
[INFO] [stdout] 308 | |     fn linkbotGetFormFactor(linkbot_inner: *mut libc::c_void,
[INFO] [stdout] 309 | |                             form: *mut libc::c_uint) -> i32;
[INFO] [stdout] ...   |
[INFO] [stdout] 332 | |                                  frequency: libc::c_float) -> i32;
[INFO] [stdout] 333 | | }
[INFO] [stdout]     | |_^ ABI should be specified here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(missing_abi)]` on by default
[INFO] [stdout]     = help: the default ABI is C
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/lib.rs:326:41
[INFO] [stdout]     |
[INFO] [stdout] 326 | ...                   cb: extern fn(i32, i32, i32, *mut Inner),
[INFO] [stdout]     |                           ^ ABI should be specified here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the default ABI is C
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/lib.rs:329:49
[INFO] [stdout]     |
[INFO] [stdout] 329 | ...                   cb: Option<extern fn(i32, i32, i32, *mut Inner)>,
[INFO] [stdout]     |                                  ^ ABI should be specified here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the default ABI is C
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linkbot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:65:27
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub type ButtonCallback = FnMut(Button, ButtonState, u32);
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(Button, ButtonState, u32)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/lib.rs:306:1
[INFO] [stdout]     |
[INFO] [stdout] 306 | / extern {
[INFO] [stdout] 307 | |     fn linkbotFromSerialId(serial_id: *const u8) -> *mut libc::c_void;
[INFO] [stdout] 308 | |     fn linkbotGetFormFactor(linkbot_inner: *mut libc::c_void,
[INFO] [stdout] 309 | |                             form: *mut libc::c_uint) -> i32;
[INFO] [stdout] ...   |
[INFO] [stdout] 332 | |                                  frequency: libc::c_float) -> i32;
[INFO] [stdout] 333 | | }
[INFO] [stdout]     | |_^ ABI should be specified here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(missing_abi)]` on by default
[INFO] [stdout]     = help: the default ABI is C
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/lib.rs:326:41
[INFO] [stdout]     |
[INFO] [stdout] 326 | ...                   cb: extern fn(i32, i32, i32, *mut Inner),
[INFO] [stdout]     |                           ^ ABI should be specified here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the default ABI is C
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: extern declarations without an explicit ABI are deprecated
[INFO] [stdout]    --> src/lib.rs:329:49
[INFO] [stdout]     |
[INFO] [stdout] 329 | ...                   cb: Option<extern fn(i32, i32, i32, *mut Inner)>,
[INFO] [stdout]     |                                  ^ ABI should be specified here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the default ABI is C
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8e88c2245198ee9398e29b35df7c4db164ff37f472279de6b734fa35eba7c48a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e88c2245198ee9398e29b35df7c4db164ff37f472279de6b734fa35eba7c48a", kill_on_drop: false }`
[INFO] [stdout] 8e88c2245198ee9398e29b35df7c4db164ff37f472279de6b734fa35eba7c48a