[INFO] fetching crate chainfile 0.2.1...
[INFO] checking chainfile-0.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate chainfile 0.2.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate chainfile 0.2.1 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 crates.io crate chainfile 0.2.1
[INFO] finished tweaking crates.io crate chainfile 0.2.1
[INFO] tweaked toml for crates.io crate chainfile 0.2.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate chainfile 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust-lapper v1.1.0
[INFO] [stderr]   Downloaded noodles-fasta v0.20.0
[INFO] [stderr]   Downloaded noodles v0.35.0
[INFO] [stderr]   Downloaded noodles-bgzf v0.20.0
[INFO] [stderr]   Downloaded noodles-core v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 1bfe32f74bcd25a985ee3655bffa87fe1564898b498e927615ed6c18397979fc
[INFO] running `Command { std: "docker" "start" "-a" "1bfe32f74bcd25a985ee3655bffa87fe1564898b498e927615ed6c18397979fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bfe32f74bcd25a985ee3655bffa87fe1564898b498e927615ed6c18397979fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bfe32f74bcd25a985ee3655bffa87fe1564898b498e927615ed6c18397979fc", kill_on_drop: false }`
[INFO] [stdout] 1bfe32f74bcd25a985ee3655bffa87fe1564898b498e927615ed6c18397979fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 8eee4c45b951cada597844f0d06277cdf142a1da8807823f7321e31108eb32a5
[INFO] running `Command { std: "docker" "start" "-a" "8eee4c45b951cada597844f0d06277cdf142a1da8807823f7321e31108eb32a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking noodles-core v0.11.0
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking flate2 v1.0.27
[INFO] [stderr]     Checking noodles-bgzf v0.20.0
[INFO] [stderr]     Checking noodles-fasta v0.20.0
[INFO] [stderr]     Checking noodles v0.35.0
[INFO] [stderr]     Checking rust-lapper v1.1.0
[INFO] [stderr]     Checking chainfile v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Interval` is imported redundantly
[INFO] [stdout]    --> src/core/interval.rs:653:9
[INFO] [stdout]     |
[INFO] [stdout] 652 |     use super::*;
[INFO] [stdout]     |         -------- the item `Interval` is already imported here
[INFO] [stdout] 653 |     use crate::core::Interval;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Strand` is imported redundantly
[INFO] [stdout]    --> src/core/interval.rs:654:9
[INFO] [stdout]     |
[INFO] [stdout] 652 |     use super::*;
[INFO] [stdout]     |         -------- the item `Strand` is already imported here
[INFO] [stdout] 653 |     use crate::core::Interval;
[INFO] [stdout] 654 |     use crate::core::Strand;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]    --> src/reader.rs:283:9
[INFO] [stdout]     |
[INFO] [stdout] 282 |     use super::*;
[INFO] [stdout]     |         -------- the item `io` is already imported here
[INFO] [stdout] 283 |     use std::io;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "8eee4c45b951cada597844f0d06277cdf142a1da8807823f7321e31108eb32a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eee4c45b951cada597844f0d06277cdf142a1da8807823f7321e31108eb32a5", kill_on_drop: false }`
[INFO] [stdout] 8eee4c45b951cada597844f0d06277cdf142a1da8807823f7321e31108eb32a5