[INFO] fetching crate ribozyme 0.4.1...
[INFO] checking ribozyme-0.4.1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate ribozyme 0.4.1 into /workspace/builds/worker-93/source
[INFO] validating manifest of crates.io crate ribozyme 0.4.1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ribozyme 0.4.1
[INFO] finished tweaking crates.io crate ribozyme 0.4.1
[INFO] tweaked toml for crates.io crate ribozyme 0.4.1 written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] crate crates.io crate ribozyme 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zip-extensions v0.4.0
[INFO] [stderr]   Downloaded superfusion v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7cbb35945d52d2ff45b12d8fd2ff26f7cdaf7d7a2bc723f89cf883af10c85077
[INFO] running `Command { std: "docker" "start" "-a" "7cbb35945d52d2ff45b12d8fd2ff26f7cdaf7d7a2bc723f89cf883af10c85077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cbb35945d52d2ff45b12d8fd2ff26f7cdaf7d7a2bc723f89cf883af10c85077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cbb35945d52d2ff45b12d8fd2ff26f7cdaf7d7a2bc723f89cf883af10c85077", kill_on_drop: false }`
[INFO] [stdout] 7cbb35945d52d2ff45b12d8fd2ff26f7cdaf7d7a2bc723f89cf883af10c85077
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abd8ec1ef26baa04e8097bb623c1fb679af9e3e1ff72073e36b6f691c26b7785
[INFO] running `Command { std: "docker" "start" "-a" "abd8ec1ef26baa04e8097bb623c1fb679af9e3e1ff72073e36b6f691c26b7785", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking lexical-core v0.7.6
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking nom v5.1.2
[INFO] [stderr]     Checking bzip2 v0.4.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking zip v0.5.13
[INFO] [stderr]     Checking superfusion v0.1.5
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking zip-extensions v0.4.0
[INFO] [stderr]     Checking ribozyme v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `BlockState`
[INFO] [stdout]   --> src/namespace/mod.rs:13:2
[INFO] [stdout]    |
[INFO] [stdout] 13 |     BlockState,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lang`
[INFO] [stdout]   --> src/namespace/mod.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Lang,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Font`
[INFO] [stdout]   --> src/namespace/mod.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Font,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BlockState`
[INFO] [stdout]   --> src/namespace/mod.rs:13:2
[INFO] [stdout]    |
[INFO] [stdout] 13 |     BlockState,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lang`
[INFO] [stdout]   --> src/namespace/mod.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Lang,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Font`
[INFO] [stdout]   --> src/namespace/mod.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Font,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.83s
[INFO] running `Command { std: "docker" "inspect" "abd8ec1ef26baa04e8097bb623c1fb679af9e3e1ff72073e36b6f691c26b7785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abd8ec1ef26baa04e8097bb623c1fb679af9e3e1ff72073e36b6f691c26b7785", kill_on_drop: false }`
[INFO] [stdout] abd8ec1ef26baa04e8097bb623c1fb679af9e3e1ff72073e36b6f691c26b7785