[INFO] fetching crate virtm 0.0.1...
[INFO] checking virtm-0.0.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate virtm 0.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate virtm 0.0.1
[INFO] finished tweaking crates.io crate virtm 0.0.1
[INFO] tweaked toml for crates.io crate virtm 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate virtm 0.0.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 147000a919d84df317403dfb040e84506e16be6960fd75996c8335d61c5dc258
[INFO] running `Command { std: "docker" "start" "-a" "147000a919d84df317403dfb040e84506e16be6960fd75996c8335d61c5dc258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "147000a919d84df317403dfb040e84506e16be6960fd75996c8335d61c5dc258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "147000a919d84df317403dfb040e84506e16be6960fd75996c8335d61c5dc258", kill_on_drop: false }`
[INFO] [stdout] 147000a919d84df317403dfb040e84506e16be6960fd75996c8335d61c5dc258
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 199ffc81abde0051ed94a5d63656ecb5b2289c6f8eb9418a5cafa2a5f0ad01c6
[INFO] running `Command { std: "docker" "start" "-a" "199ffc81abde0051ed94a5d63656ecb5b2289c6f8eb9418a5cafa2a5f0ad01c6", kill_on_drop: false }`
[INFO] [stderr]     Checking virtm v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `mem` is never read
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Memory {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 13 |     mem: [u32; MEM_SIZE],
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Registers {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 24 |     r0: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 25 |     r1: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 26 |     r2: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 27 |     r3: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 28 |     r4: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 29 |     r5: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 30 |     r6: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     r7: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 32 |     r8: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 33 |     r9: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 34 |     r10: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 35 |     r11: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 36 |     r12: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 37 |     r13: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 38 |     r14: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 39 |     r15: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 40 |     rpc: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 41 |     rcnd: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mem` is never read
[INFO] [stdout]   --> src/lib.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Memory {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 13 |     mem: [u32; MEM_SIZE],
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mem` and `reg` are never read
[INFO] [stdout]   --> src/lib.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct VirtualMachine {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 46 |     mem: Memory,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 47 |     reg: Registers,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Registers {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 24 |     r0: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 25 |     r1: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 26 |     r2: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 27 |     r3: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 28 |     r4: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 29 |     r5: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 30 |     r6: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 31 |     r7: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 32 |     r8: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 33 |     r9: u32,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 34 |     r10: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 35 |     r11: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 36 |     r12: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 37 |     r13: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 38 |     r14: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 39 |     r15: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 40 |     rpc: u32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 41 |     rcnd: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mem` and `reg` are never read
[INFO] [stdout]   --> src/lib.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct VirtualMachine {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 46 |     mem: Memory,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 47 |     reg: Registers,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "199ffc81abde0051ed94a5d63656ecb5b2289c6f8eb9418a5cafa2a5f0ad01c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "199ffc81abde0051ed94a5d63656ecb5b2289c6f8eb9418a5cafa2a5f0ad01c6", kill_on_drop: false }`
[INFO] [stdout] 199ffc81abde0051ed94a5d63656ecb5b2289c6f8eb9418a5cafa2a5f0ad01c6