[INFO] cloning repository https://github.com/epitaphial/compiler-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/epitaphial/compiler-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fepitaphial%2Fcompiler-lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fepitaphial%2Fcompiler-lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a899c42c9411cd2b2f43c168512cea12cc7eab76
[INFO] checking epitaphial/compiler-lab against try#3fada14ee01d755dc8076e611f11bf65b28ffd21 for pr-154971
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fepitaphial%2Fcompiler-lab" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/epitaphial/compiler-lab
[INFO] finished tweaking git repo https://github.com/epitaphial/compiler-lab
[INFO] tweaked toml for git repo https://github.com/epitaphial/compiler-lab written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/epitaphial/compiler-lab on toolchain 3fada14ee01d755dc8076e611f11bf65b28ffd21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/epitaphial/compiler-lab 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" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lalrpop-util v0.19.9
[INFO] [stderr]   Downloaded siphasher v0.3.10
[INFO] [stderr]   Downloaded term v0.7.0
[INFO] [stderr]   Downloaded ascii-canvas v3.0.0
[INFO] [stderr]   Downloaded is-terminal v0.4.6
[INFO] [stderr]   Downloaded pico-args v0.4.2
[INFO] [stderr]   Downloaded ena v0.14.2
[INFO] [stderr]   Downloaded key-node-list v0.0.5
[INFO] [stderr]   Downloaded koopa v0.0.6
[INFO] [stderr]   Downloaded syn v2.0.11
[INFO] [stderr]   Downloaded petgraph v0.6.3
[INFO] [stderr]   Downloaded lalrpop v0.19.9
[INFO] [stderr]   Downloaded rustix v0.37.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d21dea4cb0782a609cc91a7633fa8ea91b5feb13c732574d61de6f5121cdcc26
[INFO] running `Command { std: "docker" "start" "-a" "d21dea4cb0782a609cc91a7633fa8ea91b5feb13c732574d61de6f5121cdcc26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d21dea4cb0782a609cc91a7633fa8ea91b5feb13c732574d61de6f5121cdcc26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d21dea4cb0782a609cc91a7633fa8ea91b5feb13c732574d61de6f5121cdcc26", kill_on_drop: false }`
[INFO] [stdout] d21dea4cb0782a609cc91a7633fa8ea91b5feb13c732574d61de6f5121cdcc26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51ab76d960fbdef8f002b0ea16097f072b2790eef3bf009cf811d74e08d471ac
[INFO] running `Command { std: "docker" "start" "-a" "51ab76d960fbdef8f002b0ea16097f072b2790eef3bf009cf811d74e08d471ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.9
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling rustix v0.37.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling linux-raw-sys v0.3.0
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling ena v0.14.2
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking key-node-list v0.0.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking koopa v0.0.6
[INFO] [stderr]     Checking regex v1.7.3
[INFO] [stderr]    Compiling petgraph v0.6.3
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]    Compiling string_cache v0.8.7
[INFO] [stderr]     Checking lalrpop-util v0.19.9
[INFO] [stderr]    Compiling is-terminal v0.4.6
[INFO] [stderr]    Compiling lalrpop v0.19.9
[INFO] [stderr]    Compiling mycompiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `registers` is never read
[INFO] [stdout]   --> src/asm.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct Layout {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 85 |     pub stack: Stack,
[INFO] [stdout] 86 |     pub registers: HashMap<Value, Register>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Layout` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `const_type` is never read
[INFO] [stdout]   --> src/ast.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct ConstDecl {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 41 |     pub const_type: Type,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ConstDecl` 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 `var_type` is never read
[INFO] [stdout]   --> src/ast.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub struct VarDecl {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 63 |     pub var_type: Type,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `VarDecl` 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 `registers` is never read
[INFO] [stdout]   --> src/asm.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct Layout {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 85 |     pub stack: Stack,
[INFO] [stdout] 86 |     pub registers: HashMap<Value, Register>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Layout` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `const_type` is never read
[INFO] [stdout]   --> src/ast.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct ConstDecl {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 41 |     pub const_type: Type,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ConstDecl` 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 `var_type` is never read
[INFO] [stdout]   --> src/ast.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub struct VarDecl {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 63 |     pub var_type: Type,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `VarDecl` 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 28.13s
[INFO] running `Command { std: "docker" "inspect" "51ab76d960fbdef8f002b0ea16097f072b2790eef3bf009cf811d74e08d471ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51ab76d960fbdef8f002b0ea16097f072b2790eef3bf009cf811d74e08d471ac", kill_on_drop: false }`
[INFO] [stdout] 51ab76d960fbdef8f002b0ea16097f072b2790eef3bf009cf811d74e08d471ac
