[INFO] cloning repository https://github.com/IonPostglacial/rmvm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IonPostglacial/rmvm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIonPostglacial%2Frmvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIonPostglacial%2Frmvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5de13ddfdc633f87125f445f6112a1c37e3b0215
[INFO] checking IonPostglacial/rmvm against try#c8085cfed34c45021fc8f66d073f6394b3e35431 for pr-148939
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIonPostglacial%2Frmvm" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/IonPostglacial/rmvm
[INFO] finished tweaking git repo https://github.com/IonPostglacial/rmvm
[INFO] tweaked toml for git repo https://github.com/IonPostglacial/rmvm written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/IonPostglacial/rmvm on toolchain c8085cfed34c45021fc8f66d073f6394b3e35431
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/IonPostglacial/rmvm 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" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking IonPostglacial/rmvm against try#c8085cfed34c45021fc8f66d073f6394b3e35431 for pr-148939
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIonPostglacial%2Frmvm" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/IonPostglacial/rmvm
[INFO] finished tweaking git repo https://github.com/IonPostglacial/rmvm
[INFO] tweaked toml for git repo https://github.com/IonPostglacial/rmvm written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/IonPostglacial/rmvm on toolchain c8085cfed34c45021fc8f66d073f6394b3e35431
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/IonPostglacial/rmvm 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" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f744ad573e458c0d72759af04775b9c816749074afa0b6820b737da93063a392
[INFO] running `Command { std: "docker" "start" "-a" "f744ad573e458c0d72759af04775b9c816749074afa0b6820b737da93063a392", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f744ad573e458c0d72759af04775b9c816749074afa0b6820b737da93063a392", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f744ad573e458c0d72759af04775b9c816749074afa0b6820b737da93063a392", kill_on_drop: false }`
[INFO] [stdout] f744ad573e458c0d72759af04775b9c816749074afa0b6820b737da93063a392
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8506d985daa8007c27a7dd0483b854499b25c425b6f5c199a946f74b68a36e01
[INFO] running `Command { std: "docker" "start" "-a" "8506d985daa8007c27a7dd0483b854499b25c425b6f5c199a946f74b68a36e01", kill_on_drop: false }`
[INFO] [stderr]     Checking rmvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vm/asm.rs:9:24
[INFO] [stdout]   |
[INFO] [stdout] 9 |     UnknownInstruction(String),
[INFO] [stdout]   |     ------------------ ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `AssemblyErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 -     UnknownInstruction(String),
[INFO] [stdout] 9 +     UnknownInstruction(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/vm/asm.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |     InvalidNumber(String),
[INFO] [stdout]    |     ------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AssemblyErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 -     InvalidNumber(String),
[INFO] [stdout] 11 +     InvalidNumber(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `WrongArity` and `CodeTooBig` are never constructed
[INFO] [stdout]   --> src/vm/asm.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub enum AssemblyErrorKind {
[INFO] [stdout]    |          ----------------- variants in this enum
[INFO] [stdout]  9 |     UnknownInstruction(String),
[INFO] [stdout] 10 |     WrongArity { expected: usize, got: usize },
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 11 |     InvalidNumber(String),
[INFO] [stdout] 12 |     CodeTooBig,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AssemblyErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `line` are never read
[INFO] [stdout]   --> src/vm/asm.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct AssemblyError {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 17 |     pub kind: AssemblyErrorKind,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 18 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AssemblyError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `pc` are never read
[INFO] [stdout]   --> src/vm/machine.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct MachineError {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 22 |     kind: MachineErrorKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 23 |     pc: ProgramAddress,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MachineError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vm/asm.rs:9:24
[INFO] [stdout]   |
[INFO] [stdout] 9 |     UnknownInstruction(String),
[INFO] [stdout]   |     ------------------ ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `AssemblyErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 -     UnknownInstruction(String),
[INFO] [stdout] 9 +     UnknownInstruction(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/vm/asm.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |     InvalidNumber(String),
[INFO] [stdout]    |     ------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AssemblyErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 -     InvalidNumber(String),
[INFO] [stdout] 11 +     InvalidNumber(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `WrongArity` and `CodeTooBig` are never constructed
[INFO] [stdout]   --> src/vm/asm.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub enum AssemblyErrorKind {
[INFO] [stdout]    |          ----------------- variants in this enum
[INFO] [stdout]  9 |     UnknownInstruction(String),
[INFO] [stdout] 10 |     WrongArity { expected: usize, got: usize },
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 11 |     InvalidNumber(String),
[INFO] [stdout] 12 |     CodeTooBig,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AssemblyErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `line` are never read
[INFO] [stdout]   --> src/vm/asm.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct AssemblyError {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 17 |     pub kind: AssemblyErrorKind,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 18 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AssemblyError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind` and `pc` are never read
[INFO] [stdout]   --> src/vm/machine.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct MachineError {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 22 |     kind: MachineErrorKind,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 23 |     pc: ProgramAddress,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MachineError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "8506d985daa8007c27a7dd0483b854499b25c425b6f5c199a946f74b68a36e01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8506d985daa8007c27a7dd0483b854499b25c425b6f5c199a946f74b68a36e01", kill_on_drop: false }`
[INFO] [stdout] 8506d985daa8007c27a7dd0483b854499b25c425b6f5c199a946f74b68a36e01