[INFO] fetching crate wasmer 1.0.2...
[INFO] checking wasmer-1.0.2 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate wasmer 1.0.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate wasmer 1.0.2 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmer 1.0.2
[INFO] finished tweaking crates.io crate wasmer 1.0.2
[INFO] tweaked toml for crates.io crate wasmer 1.0.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] f4bdfb986c8330607a2545eb482c3a2f8844fe6eeddef6ef6c1674ad6c77a548
[INFO] running `Command { std: "docker" "start" "-a" "f4bdfb986c8330607a2545eb482c3a2f8844fe6eeddef6ef6c1674ad6c77a548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4bdfb986c8330607a2545eb482c3a2f8844fe6eeddef6ef6c1674ad6c77a548", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4bdfb986c8330607a2545eb482c3a2f8844fe6eeddef6ef6c1674ad6c77a548", kill_on_drop: false }`
[INFO] [stdout] f4bdfb986c8330607a2545eb482c3a2f8844fe6eeddef6ef6c1674ad6c77a548
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c576a17afd35373722c76242a66895cacbdb7fec1b0249ae25b0245856856569
[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" "c576a17afd35373722c76242a66895cacbdb7fec1b0249ae25b0245856856569", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling wasmer-compiler-cranelift v1.0.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking which v4.1.0
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]    Compiling darling_core v0.12.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling wasmer-derive v1.0.2
[INFO] [stderr]    Compiling darling_macro v0.12.3
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]    Compiling darling v0.12.3
[INFO] [stderr]    Compiling enumset_derive v0.5.4
[INFO] [stderr]     Checking enumset v1.0.6
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking indexmap v1.6.2
[INFO] [stderr]     Checking cranelift-entity v0.68.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking wasmer-types v1.0.2
[INFO] [stderr]     Checking cranelift-bforest v0.68.0
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.68.0
[INFO] [stderr]     Checking wasmer-vm 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-jit v1.0.2
[INFO] [stderr]     Checking wasmer-engine-native v1.0.2
[INFO] [stderr]    Compiling cranelift-codegen v0.68.0
[INFO] [stderr]     Checking cranelift-frontend v0.68.0
[INFO] [stderr]     Checking wasmer v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `None`
[INFO] [stdout]    --> src/import_object.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |             None,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Some`
[INFO] [stdout]    --> src/import_object.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |             Some,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> tests/externals.rs:212:20
[INFO] [stdout]     |
[INFO] [stdout] 212 |     struct MyEnv {};
[INFO] [stdout]     |                    ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> tests/externals.rs:284:20
[INFO] [stdout]     |
[INFO] [stdout] 284 |     struct MyEnv {};
[INFO] [stdout]     |                    ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `None`
[INFO] [stdout]    --> src/import_object.rs:149:13
[INFO] [stdout]     |
[INFO] [stdout] 149 |             None,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Some`
[INFO] [stdout]    --> src/import_object.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |             Some,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 53s
[INFO] running `Command { std: "docker" "inspect" "c576a17afd35373722c76242a66895cacbdb7fec1b0249ae25b0245856856569", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c576a17afd35373722c76242a66895cacbdb7fec1b0249ae25b0245856856569", kill_on_drop: false }`
[INFO] [stdout] c576a17afd35373722c76242a66895cacbdb7fec1b0249ae25b0245856856569