[INFO] fetching crate rustynuc 0.3.0...
[INFO] testing rustynuc-0.3.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate rustynuc 0.3.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate rustynuc 0.3.0
[INFO] finished tweaking crates.io crate rustynuc 0.3.0
[INFO] tweaked toml for crates.io crate rustynuc 0.3.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustynuc 0.3.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rustynuc 0.3.0 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded multimap v0.6.0
[INFO] [stderr]   Downloaded bio-types v0.7.0
[INFO] [stderr]   Downloaded assert_cmd v1.0.2
[INFO] [stderr]   Downloaded niffler v2.2.0
[INFO] [stderr]   Downloaded bio v0.30.1
[INFO] [stderr]   Downloaded rust-htslib v0.31.0
[INFO] [stderr]   Downloaded syn v1.0.53
[INFO] [stderr]   Downloaded hts-sys v1.10.3
[INFO] [stderr]   Downloaded fishers_exact v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7739679da5b08393f76671160de60ce17afb1ca0b61b8b91692766a2f7bf537b
[INFO] running `Command { std: "docker" "start" "-a" "7739679da5b08393f76671160de60ce17afb1ca0b61b8b91692766a2f7bf537b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7739679da5b08393f76671160de60ce17afb1ca0b61b8b91692766a2f7bf537b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7739679da5b08393f76671160de60ce17afb1ca0b61b8b91692766a2f7bf537b", kill_on_drop: false }`
[INFO] [stdout] 7739679da5b08393f76671160de60ce17afb1ca0b61b8b91692766a2f7bf537b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 089352a2003c7a4c44d8006635514e296ccba25657163f6d90e4aaea50e5c68f
[INFO] running `Command { std: "docker" "start" "-a" "089352a2003c7a4c44d8006635514e296ccba25657163f6d90e4aaea50e5c68f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
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[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
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[INFO] [stderr]    Compiling memchr v2.3.4
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[INFO] [stderr]    Compiling getrandom v0.1.15
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[INFO] [stderr]    Compiling linear-map v1.2.0
[INFO] [stderr]    Compiling ieee754 v0.2.6
[INFO] [stderr]    Compiling strum v0.18.0
[INFO] [stderr]    Compiling fishers_exact v1.0.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling snafu-derive v0.6.10
[INFO] [stderr]    Compiling getset v0.0.9
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling thiserror v1.0.22
[INFO] [stderr]    Compiling niffler v2.2.0
[INFO] [stderr]    Compiling snafu v0.6.10
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling bio-types v0.7.0
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling multimap v0.6.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rust-htslib v0.31.0
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling rustynuc v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `NucleotideCount` is never constructed
[INFO] [stdout]   --> src/alignment.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct NucleotideCount(pub HashMap<u8, u32>);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NucleotideCount` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/alignment.rs:2:20
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(dead_code, unused)]
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout]    = note: `#[deny(dead_code)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustynuc` (bin "rustynuc") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "089352a2003c7a4c44d8006635514e296ccba25657163f6d90e4aaea50e5c68f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "089352a2003c7a4c44d8006635514e296ccba25657163f6d90e4aaea50e5c68f", kill_on_drop: false }`
[INFO] [stdout] 089352a2003c7a4c44d8006635514e296ccba25657163f6d90e4aaea50e5c68f