[INFO] fetching crate wasmer-engine-native 1.0.2...
[INFO] checking wasmer-engine-native-1.0.2 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate wasmer-engine-native 1.0.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate wasmer-engine-native 1.0.2 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmer-engine-native 1.0.2
[INFO] finished tweaking crates.io crate wasmer-engine-native 1.0.2
[INFO] tweaked toml for crates.io crate wasmer-engine-native 1.0.2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1e7cc483e8aec431495152b4a7fc8f542542a65f209d08089035283ef4a86062
[INFO] running `Command { std: "docker" "start" "-a" "1e7cc483e8aec431495152b4a7fc8f542542a65f209d08089035283ef4a86062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e7cc483e8aec431495152b4a7fc8f542542a65f209d08089035283ef4a86062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e7cc483e8aec431495152b4a7fc8f542542a65f209d08089035283ef4a86062", kill_on_drop: false }`
[INFO] [stdout] 1e7cc483e8aec431495152b4a7fc8f542542a65f209d08089035283ef4a86062
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8e5f78553006288263ef124a9857eb0454628e3df4731006b669602af94832dc
[INFO] running `Command { std: "docker" "start" "-a" "8e5f78553006288263ef124a9857eb0454628e3df4731006b669602af94832dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking wasmparser v0.65.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling wasmer-vm v1.0.2
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling tracing-attributes v0.1.12
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling enumset_derive v0.5.3
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking which v4.0.2
[INFO] [stderr]     Checking tracing v0.1.23
[INFO] [stderr]     Checking enumset v1.0.4
[INFO] [stderr]     Checking cranelift-entity v0.68.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking wasmer-types v1.0.2
[INFO] [stderr]     Checking wasmer-compiler v1.0.2
[INFO] [stderr]     Checking wasmer-engine v1.0.2
[INFO] [stderr]     Checking wasmer-object v1.0.2
[INFO] [stderr]     Checking wasmer-engine-native v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `target`
[INFO] [stdout]  --> src/builder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     target: Option<Target>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `features`
[INFO] [stdout]  --> src/builder.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     features: Option<Features>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Clang10`
[INFO] [stdout]    --> src/engine.rs:196:5
[INFO] [stdout]     |
[INFO] [stdout] 196 |     Clang10,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Clang`
[INFO] [stdout]    --> src/engine.rs:197:5
[INFO] [stdout]     |
[INFO] [stdout] 197 |     Clang,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Gcc`
[INFO] [stdout]    --> src/engine.rs:198:5
[INFO] [stdout]     |
[INFO] [stdout] 198 |     Gcc,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `prefixer`
[INFO] [stdout]    --> src/engine.rs:226:5
[INFO] [stdout]     |
[INFO] [stdout] 226 |     prefixer: Option<Box<dyn Fn(&[u8]) -> String + Send>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `is_cross_compiling`
[INFO] [stdout]    --> src/engine.rs:228:5
[INFO] [stdout]     |
[INFO] [stdout] 228 |     is_cross_compiling: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `linker`
[INFO] [stdout]    --> src/engine.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     linker: Linker,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_cross_compiling`
[INFO] [stdout]    --> src/engine.rs:281:19
[INFO] [stdout]     |
[INFO] [stdout] 281 |     pub(crate) fn is_cross_compiling(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linker`
[INFO] [stdout]    --> src/engine.rs:285:19
[INFO] [stdout]     |
[INFO] [stdout] 285 |     pub(crate) fn linker(&self) -> Linker {
[INFO] [stdout]     |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `target`
[INFO] [stdout]  --> src/builder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     target: Option<Target>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `features`
[INFO] [stdout]  --> src/builder.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     features: Option<Features>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Clang10`
[INFO] [stdout]    --> src/engine.rs:196:5
[INFO] [stdout]     |
[INFO] [stdout] 196 |     Clang10,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Clang`
[INFO] [stdout]    --> src/engine.rs:197:5
[INFO] [stdout]     |
[INFO] [stdout] 197 |     Clang,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Gcc`
[INFO] [stdout]    --> src/engine.rs:198:5
[INFO] [stdout]     |
[INFO] [stdout] 198 |     Gcc,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `prefixer`
[INFO] [stdout]    --> src/engine.rs:226:5
[INFO] [stdout]     |
[INFO] [stdout] 226 |     prefixer: Option<Box<dyn Fn(&[u8]) -> String + Send>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `is_cross_compiling`
[INFO] [stdout]    --> src/engine.rs:228:5
[INFO] [stdout]     |
[INFO] [stdout] 228 |     is_cross_compiling: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `linker`
[INFO] [stdout]    --> src/engine.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 |     linker: Linker,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_cross_compiling`
[INFO] [stdout]    --> src/engine.rs:281:19
[INFO] [stdout]     |
[INFO] [stdout] 281 |     pub(crate) fn is_cross_compiling(&self) -> bool {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `linker`
[INFO] [stdout]    --> src/engine.rs:285:19
[INFO] [stdout]     |
[INFO] [stdout] 285 |     pub(crate) fn linker(&self) -> Linker {
[INFO] [stdout]     |                   ^^^^^^
[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 1m 19s
[INFO] running `Command { std: "docker" "inspect" "8e5f78553006288263ef124a9857eb0454628e3df4731006b669602af94832dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e5f78553006288263ef124a9857eb0454628e3df4731006b669602af94832dc", kill_on_drop: false }`
[INFO] [stdout] 8e5f78553006288263ef124a9857eb0454628e3df4731006b669602af94832dc