[INFO] cloning repository https://github.com/hello-wahyu/basic_ir
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hello-wahyu/basic_ir" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhello-wahyu%2Fbasic_ir", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhello-wahyu%2Fbasic_ir'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81a3a40f0e30c9a5520030a10a25910714f09fc1
[INFO] checking hello-wahyu/basic_ir against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhello-wahyu%2Fbasic_ir" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hello-wahyu/basic_ir on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hello-wahyu/basic_ir
[INFO] finished tweaking git repo https://github.com/hello-wahyu/basic_ir
[INFO] tweaked toml for git repo https://github.com/hello-wahyu/basic_ir written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hello-wahyu/basic_ir 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lazy-regex-proc_macros v2.2.2
[INFO] [stderr]   Downloaded lazy-regex v2.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36d0f3f1970307e7e986a36efa893663c752cc8386d225b61c24f3f55c769fc0
[INFO] running `Command { std: "docker" "start" "-a" "36d0f3f1970307e7e986a36efa893663c752cc8386d225b61c24f3f55c769fc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36d0f3f1970307e7e986a36efa893663c752cc8386d225b61c24f3f55c769fc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d0f3f1970307e7e986a36efa893663c752cc8386d225b61c24f3f55c769fc0", kill_on_drop: false }`
[INFO] [stdout] 36d0f3f1970307e7e986a36efa893663c752cc8386d225b61c24f3f55c769fc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4e8a2e58f21f45ecf1833d8c87dea1699d918b0819288639415efc3a7d32c11
[INFO] running `Command { std: "docker" "start" "-a" "d4e8a2e58f21f45ecf1833d8c87dea1699d918b0819288639415efc3a7d32c11", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling lazy-regex-proc_macros v2.2.2
[INFO] [stderr]     Checking lazy-regex v2.2.2
[INFO] [stderr]     Checking basic_ir v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `file_text` and `pos_end` are never read
[INFO] [stdout]  --> src/core/lexer/errors.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Error {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 4 |     file_name: String,
[INFO] [stdout] 5 |     file_text: String,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 8 |     pos_end: pos::Position,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]  --> src/core/parser/mod.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Parser {}
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file_text` and `pos_end` are never read
[INFO] [stdout]  --> src/core/lexer/errors.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Error {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 4 |     file_name: String,
[INFO] [stdout] 5 |     file_text: String,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 8 |     pos_end: pos::Position,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]  --> src/core/parser/mod.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Parser {}
[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` profile [unoptimized + debuginfo] target(s) in 3.59s
[INFO] running `Command { std: "docker" "inspect" "d4e8a2e58f21f45ecf1833d8c87dea1699d918b0819288639415efc3a7d32c11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4e8a2e58f21f45ecf1833d8c87dea1699d918b0819288639415efc3a7d32c11", kill_on_drop: false }`
[INFO] [stdout] d4e8a2e58f21f45ecf1833d8c87dea1699d918b0819288639415efc3a7d32c11