[INFO] fetching crate s1vm 0.1.1...
[INFO] checking s1vm-0.1.1 against master#6d05c430d2f0573bf98320bb1d2457a72ea1e67f for pr-116607
[INFO] extracting crate s1vm 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate s1vm 0.1.1 on toolchain 6d05c430d2f0573bf98320bb1d2457a72ea1e67f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate s1vm 0.1.1
[INFO] finished tweaking crates.io crate s1vm 0.1.1
[INFO] tweaked toml for crates.io crate s1vm 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate s1vm 0.1.1 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" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parity-wasm v0.42.2
[INFO] [stderr]   Downloaded parity-wasm v0.41.0
[INFO] [stderr]   Downloaded bwasm v0.1.1
[INFO] [stderr]   Downloaded wasmi-validation v0.3.0
[INFO] [stderr]   Downloaded wasmi-validation v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e17d9ffde441b8bc04d3735cda5c089680bccd0709993a15308ec095016334d
[INFO] running `Command { std: "docker" "start" "-a" "0e17d9ffde441b8bc04d3735cda5c089680bccd0709993a15308ec095016334d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e17d9ffde441b8bc04d3735cda5c089680bccd0709993a15308ec095016334d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e17d9ffde441b8bc04d3735cda5c089680bccd0709993a15308ec095016334d", kill_on_drop: false }`
[INFO] [stdout] 0e17d9ffde441b8bc04d3735cda5c089680bccd0709993a15308ec095016334d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+6d05c430d2f0573bf98320bb1d2457a72ea1e67f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b0e29a7d4e4cbde81f2793e7eca8a96b59d133f43a8483fdd1beb7d21eb9c84
[INFO] running `Command { std: "docker" "start" "-a" "3b0e29a7d4e4cbde81f2793e7eca8a96b59d133f43a8483fdd1beb7d21eb9c84", kill_on_drop: false }`
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]     Checking parity-wasm v0.42.2
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]     Checking wasmi-validation v0.4.0
[INFO] [stderr]     Checking bwasm v0.1.1
[INFO] [stderr]     Checking s1vm v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Branch` is never constructed
[INFO] [stdout]   --> src/compiler.rs:18:3
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum Action {
[INFO] [stdout]    |          ------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 18 |   Branch(u32),
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Action` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]   --> src/compiler.rs:49:3
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Block
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 48 | {
[INFO] [stdout] 49 |   kind: BlockKind,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Branch` is never constructed
[INFO] [stdout]   --> src/compiler.rs:18:3
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum Action {
[INFO] [stdout]    |          ------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 18 |   Branch(u32),
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Action` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]   --> src/compiler.rs:49:3
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct Block
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 48 | {
[INFO] [stdout] 49 |   kind: BlockKind,
[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 [optimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "3b0e29a7d4e4cbde81f2793e7eca8a96b59d133f43a8483fdd1beb7d21eb9c84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b0e29a7d4e4cbde81f2793e7eca8a96b59d133f43a8483fdd1beb7d21eb9c84", kill_on_drop: false }`
[INFO] [stdout] 3b0e29a7d4e4cbde81f2793e7eca8a96b59d133f43a8483fdd1beb7d21eb9c84