[INFO] fetching crate wasmots-client 0.1.0...
[INFO] checking wasmots-client-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate wasmots-client 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate wasmots-client 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmots-client 0.1.0
[INFO] finished tweaking crates.io crate wasmots-client 0.1.0
[INFO] tweaked toml for crates.io crate wasmots-client 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate wasmots-client 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cranelift-entity v0.68.0
[INFO] [stderr]   Downloaded wat v1.0.33
[INFO] [stderr]   Downloaded wast v32.0.0
[INFO] [stderr]   Downloaded generational-arena v0.2.8
[INFO] [stderr]   Downloaded ghost v0.1.2
[INFO] [stderr]   Downloaded tracing-attributes v0.1.11
[INFO] [stderr]   Downloaded serde_bytes v0.11.5
[INFO] [stderr]   Downloaded rand_core v0.6.1
[INFO] [stderr]   Downloaded redox_syscall v0.2.4
[INFO] [stderr]   Downloaded memmap2 v0.2.0
[INFO] [stderr]   Downloaded sct v0.6.0
[INFO] [stderr]   Downloaded chunked_transfer v1.3.0
[INFO] [stderr]   Downloaded js-sys v0.3.47
[INFO] [stderr]   Downloaded web-sys v0.3.47
[INFO] [stderr]   Downloaded gimli v0.22.0
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.70
[INFO] [stderr]   Downloaded bumpalo v3.5.0
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.70
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.68.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.70
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.70
[INFO] [stderr]   Downloaded ureq v2.0.1
[INFO] [stderr]   Downloaded inventory-impl v0.1.10
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.70
[INFO] [stderr]   Downloaded inventory v0.1.10
[INFO] [stderr]   Downloaded typetag-impl v0.1.7
[INFO] [stderr]   Downloaded cranelift-bforest v0.68.0
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.68.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.68.0
[INFO] [stderr]   Downloaded wasmer-compiler-cranelift v1.0.1
[INFO] [stderr]   Downloaded wasmer-derive v1.0.1
[INFO] [stderr]   Downloaded wasmer-engine-jit v1.0.1
[INFO] [stderr]   Downloaded wasi v0.10.1+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded bincode v1.3.1
[INFO] [stderr]   Downloaded wasmer-engine v1.0.1
[INFO] [stderr]   Downloaded cranelift-codegen v0.68.0
[INFO] [stderr]   Downloaded ring v0.16.19
[INFO] [stderr]   Downloaded raw-cpuid v7.0.4
[INFO] [stderr]   Downloaded wasmer_enumset_derive v0.5.0
[INFO] [stderr]   Downloaded wasmparser v0.65.0
[INFO] [stderr]   Downloaded wasmer-compiler v1.0.1
[INFO] [stderr]   Downloaded wasmer-object v1.0.1
[INFO] [stderr]   Downloaded wasmer-engine-native v1.0.1
[INFO] [stderr]   Downloaded more-asserts v0.2.1
[INFO] [stderr]   Downloaded wasmer-types v1.0.1
[INFO] [stderr]   Downloaded wasmer-vm v1.0.1
[INFO] [stderr]   Downloaded leb128 v0.2.4
[INFO] [stderr]   Downloaded wasmer v1.0.1
[INFO] [stderr]   Downloaded wasmer-wasi v1.0.1
[INFO] [stderr]   Downloaded libc v0.2.83
[INFO] [stderr]   Downloaded webpki-roots v0.21.0
[INFO] [stderr]   Downloaded erased-serde v0.3.13
[INFO] [stderr]   Downloaded ctor v0.1.18
[INFO] [stderr]   Downloaded backtrace v0.3.56
[INFO] [stderr]   Downloaded rustls v0.19.0
[INFO] [stderr]   Downloaded typetag v0.1.7
[INFO] [stderr]   Downloaded tracing v0.1.22
[INFO] [stderr]   Downloaded target-lexicon v0.11.1
[INFO] [stderr]   Downloaded wasmer_enumset v1.0.1
[INFO] [stderr]   Downloaded which v4.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9a199c1d1dc353e35a5aaac27ddae8ea1a25d2770992ccc821c48e18bb51d21
[INFO] running `Command { std: "docker" "start" "-a" "a9a199c1d1dc353e35a5aaac27ddae8ea1a25d2770992ccc821c48e18bb51d21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9a199c1d1dc353e35a5aaac27ddae8ea1a25d2770992ccc821c48e18bb51d21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9a199c1d1dc353e35a5aaac27ddae8ea1a25d2770992ccc821c48e18bb51d21", kill_on_drop: false }`
[INFO] [stdout] a9a199c1d1dc353e35a5aaac27ddae8ea1a25d2770992ccc821c48e18bb51d21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86fdf084489b2708d6fce603f71767706a399e27ec26049d130e47dbc9948441
[INFO] running `Command { std: "docker" "start" "-a" "86fdf084489b2708d6fce603f71767706a399e27ec26049d130e47dbc9948441", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.83
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling target-lexicon v0.11.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling wasmer-vm v1.0.1
[INFO] [stderr]    Compiling raw-cpuid v7.0.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking more-asserts v0.2.1
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking wasmparser v0.65.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.68.0
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking memmap2 v0.2.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling wasmer-compiler-cranelift v1.0.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking wast v32.0.0
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking chunked_transfer v1.3.0
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking rustls v0.19.0
[INFO] [stderr]     Checking webpki-roots v0.21.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling ctor v0.1.18
[INFO] [stderr]    Compiling inventory-impl v0.1.10
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling typetag-impl v0.1.7
[INFO] [stderr]    Compiling wasmer-derive v1.0.1
[INFO] [stderr]     Checking wat v1.0.33
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking which v4.0.2
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking ureq v2.0.1
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling wasmer_enumset_derive v0.5.0
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking wasmer_enumset v1.0.1
[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 erased-serde v0.3.13
[INFO] [stderr]     Checking generational-arena v0.2.8
[INFO] [stderr]     Checking wasmer-types v1.0.1
[INFO] [stderr]     Checking cranelift-bforest v0.68.0
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking typetag v0.1.7
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.68.0
[INFO] [stderr]     Checking wasmer-compiler v1.0.1
[INFO] [stderr]     Checking wasmer-engine v1.0.1
[INFO] [stderr]     Checking wasmer-object v1.0.1
[INFO] [stderr]     Checking wasmer-engine-jit v1.0.1
[INFO] [stderr]     Checking wasmer-engine-native v1.0.1
[INFO] [stderr]    Compiling cranelift-codegen v0.68.0
[INFO] [stderr]     Checking cranelift-frontend v0.68.0
[INFO] [stderr]     Checking wasmer v1.0.1
[INFO] [stderr]     Checking wasmer-wasi v1.0.1
[INFO] [stderr]     Checking wasmots-client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 32s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.68.0, wasmparser v0.65.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 6`
[INFO] running `Command { std: "docker" "inspect" "86fdf084489b2708d6fce603f71767706a399e27ec26049d130e47dbc9948441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86fdf084489b2708d6fce603f71767706a399e27ec26049d130e47dbc9948441", kill_on_drop: false }`
[INFO] [stdout] 86fdf084489b2708d6fce603f71767706a399e27ec26049d130e47dbc9948441