[INFO] fetching crate rumi 0.2.1...
[INFO] checking rumi-0.2.1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate rumi 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate rumi 0.2.1 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 rumi 0.2.1
[INFO] finished tweaking crates.io crate rumi 0.2.1
[INFO] tweaked toml for crates.io crate rumi 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate rumi 0.2.1 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8b748d0e07353ccc4ebfb5e633c063a4ab04a9eb36cdc52c79f33e8c0ae42521
[INFO] running `Command { std: "docker" "start" "-a" "8b748d0e07353ccc4ebfb5e633c063a4ab04a9eb36cdc52c79f33e8c0ae42521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b748d0e07353ccc4ebfb5e633c063a4ab04a9eb36cdc52c79f33e8c0ae42521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b748d0e07353ccc4ebfb5e633c063a4ab04a9eb36cdc52c79f33e8c0ae42521", kill_on_drop: false }`
[INFO] [stdout] 8b748d0e07353ccc4ebfb5e633c063a4ab04a9eb36cdc52c79f33e8c0ae42521
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4d2b19885abe7de57d7a03f24e4b6f01d16828f02272b039d21b11ee56e16edf
[INFO] running `Command { std: "docker" "start" "-a" "4d2b19885abe7de57d7a03f24e4b6f01d16828f02272b039d21b11ee56e16edf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
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[INFO] [stderr]    Compiling thread_local v0.3.6
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[INFO] [stderr]     Checking either v1.5.2
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[INFO] [stderr]     Checking num_cpus v1.10.1
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[INFO] [stderr]    Compiling cexpr v0.3.5
[INFO] [stderr]     Checking percent-encoding v2.1.0
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[INFO] [stderr]    Compiling rust-htslib v0.26.0
[INFO] [stderr]     Checking bio-types v0.5.1
[INFO] [stderr]     Checking rumi v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `umi` is never read
[INFO] [stdout]    --> src/lib.rs:170:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct Group<'a> {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 169 |     nodes: Vec<&'a Node>,
[INFO] [stdout] 170 |     umi: &'a BaseBits,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Group` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:543:5
[INFO] [stdout]     |
[INFO] [stdout] 543 |     &graph_indicies.sort_by(|&a, &b| graph[b].freq.freq.cmp(&graph[a].freq.freq));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 543 |     let _ = &graph_indicies.sort_by(|&a, &b| graph[b].freq.freq.cmp(&graph[a].freq.freq));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `umi` is never read
[INFO] [stdout]    --> src/lib.rs:170:5
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct Group<'a> {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 169 |     nodes: Vec<&'a Node>,
[INFO] [stdout] 170 |     umi: &'a BaseBits,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Group` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib.rs:543:5
[INFO] [stdout]     |
[INFO] [stdout] 543 |     &graph_indicies.sort_by(|&a, &b| graph[b].freq.freq.cmp(&graph[a].freq.freq));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 543 |     let _ = &graph_indicies.sort_by(|&a, &b| graph[b].freq.freq.cmp(&graph[a].freq.freq));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.45s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cexpr v0.3.5, nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "4d2b19885abe7de57d7a03f24e4b6f01d16828f02272b039d21b11ee56e16edf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d2b19885abe7de57d7a03f24e4b6f01d16828f02272b039d21b11ee56e16edf", kill_on_drop: false }`
[INFO] [stdout] 4d2b19885abe7de57d7a03f24e4b6f01d16828f02272b039d21b11ee56e16edf