[INFO] fetching crate tc-executor-wasmtime 0.8.0...
[INFO] checking tc-executor-wasmtime-0.8.0 against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657
[INFO] extracting crate tc-executor-wasmtime 0.8.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate tc-executor-wasmtime 0.8.0
[INFO] finished tweaking crates.io crate tc-executor-wasmtime 0.8.0
[INFO] tweaked toml for crates.io crate tc-executor-wasmtime 0.8.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tc-executor-wasmtime 0.8.0 on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 297 packages to latest compatible versions
[INFO] [stderr]       Adding tetsy-wasm v0.41.0 (available: v0.42.1)
[INFO] [stderr]       Adding twasm-utils v0.16.0 (available: v0.17.0)
[INFO] [stderr]       Adding wasmtime v0.19.0 (available: v44.0.1)
[INFO] [stderr]       Adding zeroize v1.3.0 (available: v1.8.2)
[INFO] [stderr]       Adding zstd-sys v1.4.18+zstd.1.4.7 (available: v1.6.3+zstd.1.5.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fa827f8c5fc84373f29bdfd45f00cfc061380572d7c0aaab2c48d9524d4d204
[INFO] running `Command { std: "docker" "start" "-a" "2fa827f8c5fc84373f29bdfd45f00cfc061380572d7c0aaab2c48d9524d4d204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fa827f8c5fc84373f29bdfd45f00cfc061380572d7c0aaab2c48d9524d4d204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fa827f8c5fc84373f29bdfd45f00cfc061380572d7c0aaab2c48d9524d4d204", kill_on_drop: false }`
[INFO] [stdout] 2fa827f8c5fc84373f29bdfd45f00cfc061380572d7c0aaab2c48d9524d4d204
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b7212364a60bd4b22e008c6bf7e931a626c383019a48f3677eef56ee40a2c80
[INFO] running `Command { std: "docker" "start" "-a" "0b7212364a60bd4b22e008c6bf7e931a626c383019a48f3677eef56ee40a2c80", kill_on_drop: false }`
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[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/instance_wrapper.rs:388:4
[INFO] [stdout]     |
[INFO] [stdout] 388 |             &mut memory[range].copy_from_slice(data);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 388 |             let _ = &mut memory[range].copy_from_slice(data);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/instance_wrapper.rs:388:4
[INFO] [stdout]     |
[INFO] [stdout] 388 |             &mut memory[range].copy_from_slice(data);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 388 |             let _ = &mut memory[range].copy_from_slice(data);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 36s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.66.0, wasmparser v0.57.0, wasmparser v0.59.0, wasmtime-debug v0.19.0, wasmtime-environ v0.19.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "0b7212364a60bd4b22e008c6bf7e931a626c383019a48f3677eef56ee40a2c80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b7212364a60bd4b22e008c6bf7e931a626c383019a48f3677eef56ee40a2c80", kill_on_drop: false }`
[INFO] [stdout] 0b7212364a60bd4b22e008c6bf7e931a626c383019a48f3677eef56ee40a2c80
