[INFO] cloning repository https://github.com/penryu/dug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/penryu/dug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpenryu%2Fdug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpenryu%2Fdug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58cfc0a580111433fe1449d6011c119a4f983a15
[INFO] checking penryu/dug against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpenryu%2Fdug" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/penryu/dug 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/penryu/dug
[INFO] finished tweaking git repo https://github.com/penryu/dug
[INFO] tweaked toml for git repo https://github.com/penryu/dug written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/penryu/dug 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-macro v0.3.29
[INFO] [stderr]   Downloaded trust-dns-resolver v0.23.2
[INFO] [stderr]   Downloaded anstream v0.6.4
[INFO] [stderr]   Downloaded bytecount v0.6.7
[INFO] [stderr]   Downloaded anstyle-parse v0.2.2
[INFO] [stderr]   Downloaded clap v4.4.7
[INFO] [stderr]   Downloaded serde_derive v1.0.190
[INFO] [stderr]   Downloaded clap_builder v4.4.7
[INFO] [stderr]   Downloaded serde v1.0.190
[INFO] [stderr]   Downloaded rustls v0.21.8
[INFO] [stderr]   Downloaded syn v2.0.38
[INFO] [stderr]   Downloaded libc v0.2.149
[INFO] [stderr]   Downloaded tokio v1.33.0
[INFO] [stderr]   Downloaded trust-dns-proto v0.23.2
[INFO] [stderr]   Downloaded widestring v1.0.2
[INFO] [stderr]   Downloaded webpki-roots v0.25.2
[INFO] [stderr]   Downloaded anstyle-wincon v3.0.1
[INFO] [stderr]   Downloaded ipconfig v0.3.2
[INFO] [stderr]   Downloaded enum-as-inner v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 85fd7d1af66d3ac04a746eb3976062b8ee47e879e2f4befbfbff87646de379d0
[INFO] running `Command { std: "docker" "start" "-a" "85fd7d1af66d3ac04a746eb3976062b8ee47e879e2f4befbfbff87646de379d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85fd7d1af66d3ac04a746eb3976062b8ee47e879e2f4befbfbff87646de379d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85fd7d1af66d3ac04a746eb3976062b8ee47e879e2f4befbfbff87646de379d0", kill_on_drop: false }`
[INFO] [stdout] 85fd7d1af66d3ac04a746eb3976062b8ee47e879e2f4befbfbff87646de379d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b2fc2820fd0690d2f2f95d22ca3a57c2f1ffa81abb6c3288557516d1a7dd7a9f
[INFO] running `Command { std: "docker" "start" "-a" "b2fc2820fd0690d2f2f95d22ca3a57c2f1ffa81abb6c3288557516d1a7dd7a9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]    Compiling rustls v0.21.8
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling async-trait v0.1.74
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]     Checking anstyle-parse v0.2.2
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]     Checking anstyle v1.0.4
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]     Checking base64 v0.21.5
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking clap_lex v0.6.0
[INFO] [stderr]     Checking bytecount v0.6.7
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking data-encoding v2.4.0
[INFO] [stderr]     Checking anstream v0.6.4
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking papergrid v0.10.0
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking webpki-roots v0.25.2
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking clap_builder v4.4.7
[INFO] [stderr]     Checking rustls-pemfile v1.0.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking url v2.4.1
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling ring v0.17.5
[INFO] [stderr]    Compiling tabled_derive v0.6.0
[INFO] [stderr]     Checking tabled v0.14.0
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.29
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling serde_derive v1.0.190
[INFO] [stderr]    Compiling enum-as-inner v0.6.0
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]     Checking tokio v1.33.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking clap v4.4.7
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking tokio-rustls v0.24.1
[INFO] [stderr]     Checking trust-dns-proto v0.23.2
[INFO] [stderr]     Checking trust-dns-resolver v0.23.2
[INFO] [stderr]     Checking dug v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/resolvers.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/resolvers.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.26s
[INFO] running `Command { std: "docker" "inspect" "b2fc2820fd0690d2f2f95d22ca3a57c2f1ffa81abb6c3288557516d1a7dd7a9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2fc2820fd0690d2f2f95d22ca3a57c2f1ffa81abb6c3288557516d1a7dd7a9f", kill_on_drop: false }`
[INFO] [stdout] b2fc2820fd0690d2f2f95d22ca3a57c2f1ffa81abb6c3288557516d1a7dd7a9f