[INFO] fetching crate kmers-rs 0.2.0...
[INFO] checking kmers-rs-0.2.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate kmers-rs 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate kmers-rs 0.2.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kmers-rs 0.2.0
[INFO] finished tweaking crates.io crate kmers-rs 0.2.0
[INFO] tweaked toml for crates.io crate kmers-rs 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60b51e7eb23f07d068259b34ef58f3b24c26c26c9b811d0005f7a74e736c25d9
[INFO] running `Command { std: "docker" "start" "-a" "60b51e7eb23f07d068259b34ef58f3b24c26c26c9b811d0005f7a74e736c25d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60b51e7eb23f07d068259b34ef58f3b24c26c26c9b811d0005f7a74e736c25d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60b51e7eb23f07d068259b34ef58f3b24c26c26c9b811d0005f7a74e736c25d9", kill_on_drop: false }`
[INFO] [stdout] 60b51e7eb23f07d068259b34ef58f3b24c26c26c9b811d0005f7a74e736c25d9
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc5126f1f5457e4b47b9054d5c5d6b1721ddc23ab298784c660ae34e6f729650
[INFO] running `Command { std: "docker" "start" "-a" "dc5126f1f5457e4b47b9054d5c5d6b1721ddc23ab298784c660ae34e6f729650", kill_on_drop: false }`
[INFO] [stderr]     Checking kmers-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Encoder16` is never constructed
[INFO] [stdout]   --> src/vbyte.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct Encoder16 {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `encode` is never used
[INFO] [stdout]   --> src/vbyte.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl Encoder16 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 67 |     pub fn encode(x: u64, sink: &mut Vec<u16>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Decoder16` is never constructed
[INFO] [stdout]   --> src/vbyte.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Decoder16 {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `decode` is never used
[INFO] [stdout]   --> src/vbyte.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl Decoder16 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 93 |     pub fn decode<'a, I>(iter: &mut I) -> Option<u64>
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Encoder16` is never constructed
[INFO] [stdout]   --> src/vbyte.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct Encoder16 {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `encode` is never used
[INFO] [stdout]   --> src/vbyte.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl Encoder16 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 67 |     pub fn encode(x: u64, sink: &mut Vec<u16>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Decoder16` is never constructed
[INFO] [stdout]   --> src/vbyte.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Decoder16 {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `decode` is never used
[INFO] [stdout]   --> src/vbyte.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl Decoder16 {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 93 |     pub fn decode<'a, I>(iter: &mut I) -> Option<u64>
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "dc5126f1f5457e4b47b9054d5c5d6b1721ddc23ab298784c660ae34e6f729650", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc5126f1f5457e4b47b9054d5c5d6b1721ddc23ab298784c660ae34e6f729650", kill_on_drop: false }`
[INFO] [stdout] dc5126f1f5457e4b47b9054d5c5d6b1721ddc23ab298784c660ae34e6f729650