[INFO] fetching crate forrustts 0.1.1...
[INFO] checking forrustts-0.1.1 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate forrustts 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate forrustts 0.1.1 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate forrustts 0.1.1
[INFO] finished tweaking crates.io crate forrustts 0.1.1
[INFO] tweaked toml for crates.io crate forrustts 0.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e76aaa0ea13e4c908bb3588e28c6b77d8447045fb8f8355612a794842dd4c2c8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e76aaa0ea13e4c908bb3588e28c6b77d8447045fb8f8355612a794842dd4c2c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e76aaa0ea13e4c908bb3588e28c6b77d8447045fb8f8355612a794842dd4c2c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e76aaa0ea13e4c908bb3588e28c6b77d8447045fb8f8355612a794842dd4c2c8", kill_on_drop: false }`
[INFO] [stdout] e76aaa0ea13e4c908bb3588e28c6b77d8447045fb8f8355612a794842dd4c2c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6df3a76e346c5fe70d6a77ff9ec2674d339d8cff660517080e66c80efd24467d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6df3a76e346c5fe70d6a77ff9ec2674d339d8cff660517080e66c80efd24467d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling bindgen v0.56.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]    Compiling GSL-sys v2.0.1
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling clang-sys v1.1.1
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking GSL v2.0.1
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling tskit_rust v0.1.0
[INFO] [stderr]     Checking forrustts v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `index`
[INFO] [stdout]   --> src/wright_fisher.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     index: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/simplification_logic.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 | /             format!(
[INFO] [stdout] 41 | |                 "overlap details = {} {} {}",
[INFO] [stdout] 42 | |                 self.oend,
[INFO] [stdout] 43 | |                 self.obeg,
[INFO] [stdout] 44 | |                 self.overlapping.len()
[INFO] [stdout] 45 | |             )
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 40 |             
[INFO] [stdout] 41 |                 "overlap details = {} {} {}",
[INFO] [stdout] 42 |                 self.oend,
[INFO] [stdout] 43 |                 self.obeg,
[INFO] [stdout] 44 |                 self.overlapping.len()
[INFO] [stdout] 45 |             
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `index`
[INFO] [stdout]   --> src/wright_fisher.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     index: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/simplification_logic.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 | /             format!(
[INFO] [stdout] 41 | |                 "overlap details = {} {} {}",
[INFO] [stdout] 42 | |                 self.oend,
[INFO] [stdout] 43 | |                 self.obeg,
[INFO] [stdout] 44 | |                 self.overlapping.len()
[INFO] [stdout] 45 | |             )
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 40 |             
[INFO] [stdout] 41 |                 "overlap details = {} {} {}",
[INFO] [stdout] 42 |                 self.oend,
[INFO] [stdout] 43 |                 self.obeg,
[INFO] [stdout] 44 |                 self.overlapping.len()
[INFO] [stdout] 45 |             
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 20s
[INFO] running `Command { std: "docker" "inspect" "6df3a76e346c5fe70d6a77ff9ec2674d339d8cff660517080e66c80efd24467d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6df3a76e346c5fe70d6a77ff9ec2674d339d8cff660517080e66c80efd24467d", kill_on_drop: false }`
[INFO] [stdout] 6df3a76e346c5fe70d6a77ff9ec2674d339d8cff660517080e66c80efd24467d