[INFO] cloning repository https://github.com/ArcSecant/coggers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArcSecant/coggers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArcSecant%2Fcoggers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArcSecant%2Fcoggers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 20329097a16b58a9d39eeb24323ad199e78bdfdc
[INFO] checking ArcSecant/coggers against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArcSecant%2Fcoggers" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ArcSecant/coggers
[INFO] finished tweaking git repo https://github.com/ArcSecant/coggers
[INFO] tweaked toml for git repo https://github.com/ArcSecant/coggers written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ArcSecant/coggers on toolchain 3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ArcSecant/coggers 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" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7ac13d03bab9b230782426b67bedd9a2e59e5ac5a25c98e06c66c536d5f03fb
[INFO] running `Command { std: "docker" "start" "-a" "e7ac13d03bab9b230782426b67bedd9a2e59e5ac5a25c98e06c66c536d5f03fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7ac13d03bab9b230782426b67bedd9a2e59e5ac5a25c98e06c66c536d5f03fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7ac13d03bab9b230782426b67bedd9a2e59e5ac5a25c98e06c66c536d5f03fb", kill_on_drop: false }`
[INFO] [stdout] e7ac13d03bab9b230782426b67bedd9a2e59e5ac5a25c98e06c66c536d5f03fb
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba47d97f30f948a5db8301428158212abb885df4c236d73df372c97a585b957a
[INFO] running `Command { std: "docker" "start" "-a" "ba47d97f30f948a5db8301428158212abb885df4c236d73df372c97a585b957a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cranelift-entity v0.68.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.68.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling target-lexicon v0.11.1
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling anyhow v1.0.36
[INFO] [stderr]    Compiling peg-runtime v0.6.3
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.68.0
[INFO] [stderr]     Checking cranelift-bforest v0.68.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]    Compiling peg-macros v0.6.3
[INFO] [stderr]    Compiling raw-cpuid v7.0.4
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking peg v0.6.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]    Compiling cranelift-codegen v0.68.0
[INFO] [stderr]     Checking cranelift-frontend v0.68.0
[INFO] [stderr]     Checking cranelift-native v0.68.0
[INFO] [stderr]     Checking cranelift-module v0.68.0
[INFO] [stderr]     Checking cranelift-preopt v0.68.0
[INFO] [stderr]     Checking cranelift v0.68.0
[INFO] [stderr]     Checking cranelift-simplejit v0.68.0
[INFO] [stderr]     Checking poggers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/inference.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 325 |             _ => return Err(Error::DoesNotOccur),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/inference.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |             Expr::EVar(name) => match env.0.get(name) {
[INFO] [stdout]     |             ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 226 |             Expr::ELit(lit) => self.infer_lit(lit),
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] 227 |             Expr::ELam(name, exp) => {
[INFO] [stdout]     |             --------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 242 |             Expr::EApp(fun, arg) => {
[INFO] [stdout]     |             -------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 325 |             _ => return Err(Error::DoesNotOccur),
[INFO] [stdout]     |             ^ ...and 6 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/gen.rs:22:22
[INFO] [stdout]    |
[INFO] [stdout] 22 |     CraneliftCodegen(CodegenError),
[INFO] [stdout]    |     ---------------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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] 22 -     CraneliftCodegen(CodegenError),
[INFO] [stdout] 22 +     CraneliftCodegen(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/gen.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Undefined(&'static str),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` 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] 23 -     Undefined(&'static str),
[INFO] [stdout] 23 +     Undefined(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/gen.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |     CraneliftModule(ModuleError),
[INFO] [stdout]    |     --------------- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` 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] 26 -     CraneliftModule(ModuleError),
[INFO] [stdout] 26 +     CraneliftModule(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `TCustom` is never constructed
[INFO] [stdout]   --> src/inference.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub enum Type {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 53 |     TCustom(String, Vec<Type>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]    --> src/inference.rs:339:8
[INFO] [stdout]     |
[INFO] [stdout] 339 | pub fn test() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/inference.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 325 |             _ => return Err(Error::DoesNotOccur),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/inference.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |             Expr::EVar(name) => match env.0.get(name) {
[INFO] [stdout]     |             ---------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 226 |             Expr::ELit(lit) => self.infer_lit(lit),
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] 227 |             Expr::ELam(name, exp) => {
[INFO] [stdout]     |             --------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 242 |             Expr::EApp(fun, arg) => {
[INFO] [stdout]     |             -------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 325 |             _ => return Err(Error::DoesNotOccur),
[INFO] [stdout]     |             ^ ...and 6 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/gen.rs:22:22
[INFO] [stdout]    |
[INFO] [stdout] 22 |     CraneliftCodegen(CodegenError),
[INFO] [stdout]    |     ---------------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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] 22 -     CraneliftCodegen(CodegenError),
[INFO] [stdout] 22 +     CraneliftCodegen(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/gen.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Undefined(&'static str),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` 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] 23 -     Undefined(&'static str),
[INFO] [stdout] 23 +     Undefined(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/gen.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |     CraneliftModule(ModuleError),
[INFO] [stdout]    |     --------------- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` 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] 26 -     CraneliftModule(ModuleError),
[INFO] [stdout] 26 +     CraneliftModule(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `TCustom` is never constructed
[INFO] [stdout]   --> src/inference.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub enum Type {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 53 |     TCustom(String, Vec<Type>),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]    --> src/inference.rs:339:8
[INFO] [stdout]     |
[INFO] [stdout] 339 | pub fn test() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.27s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.68.0
[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" "ba47d97f30f948a5db8301428158212abb885df4c236d73df372c97a585b957a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba47d97f30f948a5db8301428158212abb885df4c236d73df372c97a585b957a", kill_on_drop: false }`
[INFO] [stdout] ba47d97f30f948a5db8301428158212abb885df4c236d73df372c97a585b957a
