[INFO] fetching crate wasmer 2.0.0-rc1...
[INFO] checking wasmer-2.0.0-rc1 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate wasmer 2.0.0-rc1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate wasmer 2.0.0-rc1 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmer 2.0.0-rc1
[INFO] finished tweaking crates.io crate wasmer 2.0.0-rc1
[INFO] tweaked toml for crates.io crate wasmer 2.0.0-rc1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cbca7c06e4a4027ab83f9f17294ed281a3b5e11f16bf46f1370fdc74c8b9398
[INFO] running `Command { std: "docker" "start" "-a" "1cbca7c06e4a4027ab83f9f17294ed281a3b5e11f16bf46f1370fdc74c8b9398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cbca7c06e4a4027ab83f9f17294ed281a3b5e11f16bf46f1370fdc74c8b9398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cbca7c06e4a4027ab83f9f17294ed281a3b5e11f16bf46f1370fdc74c8b9398", kill_on_drop: false }`
[INFO] [stdout] 1cbca7c06e4a4027ab83f9f17294ed281a3b5e11f16bf46f1370fdc74c8b9398
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7481b11ef8bd8795edc251e9578ba4e5422df2b00324429dcd8bd8d306f78101
[INFO] running `Command { std: "docker" "start" "-a" "7481b11ef8bd8795edc251e9578ba4e5422df2b00324429dcd8bd8d306f78101", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling wasmer-compiler-cranelift v2.0.0-rc2
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]    Compiling wasmer-vm v2.0.0-rc2
[INFO] [stderr]     Checking libloading v0.7.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]    Compiling cranelift-codegen v0.74.0
[INFO] [stderr]     Checking memmap2 v0.2.3
[INFO] [stderr]     Checking which v4.1.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking wast v36.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking object v0.24.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]    Compiling wasmer-derive v2.0.0-rc2
[INFO] [stderr]     Checking wasmer-compiler v2.0.0-rc2
[INFO] [stderr]     Checking wasmer-engine v2.0.0-rc2
[INFO] [stderr]     Checking wasmer-object v2.0.0-rc2
[INFO] [stderr]     Checking wasmer-engine-universal v2.0.0-rc2
[INFO] [stderr]     Checking wasmer-engine-dylib v2.0.0-rc2
[INFO] [stderr]     Checking wat v1.0.38
[INFO] [stderr]     Checking cranelift-frontend v0.74.0
[INFO] [stderr]     Checking wasmer v2.0.0-rc1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> tests/reference_types.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.90s
[INFO] running `Command { std: "docker" "inspect" "7481b11ef8bd8795edc251e9578ba4e5422df2b00324429dcd8bd8d306f78101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7481b11ef8bd8795edc251e9578ba4e5422df2b00324429dcd8bd8d306f78101", kill_on_drop: false }`
[INFO] [stdout] 7481b11ef8bd8795edc251e9578ba4e5422df2b00324429dcd8bd8d306f78101