[INFO] cloning repository https://github.com/arkagh0sh/hilbert
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arkagh0sh/hilbert" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farkagh0sh%2Fhilbert", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farkagh0sh%2Fhilbert'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4e3bb67ed27066b41217e68ca9382d1fcb25973
[INFO] checking arkagh0sh/hilbert against try#e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837 for pr-143619
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farkagh0sh%2Fhilbert" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arkagh0sh/hilbert
[INFO] finished tweaking git repo https://github.com/arkagh0sh/hilbert
[INFO] tweaked toml for git repo https://github.com/arkagh0sh/hilbert written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arkagh0sh/hilbert on toolchain e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arkagh0sh/hilbert 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" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77f0b9f00bf7c86084b166873a17072bfef13530fea31af50a467c5bf576aff0
[INFO] running `Command { std: "docker" "start" "-a" "77f0b9f00bf7c86084b166873a17072bfef13530fea31af50a467c5bf576aff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77f0b9f00bf7c86084b166873a17072bfef13530fea31af50a467c5bf576aff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77f0b9f00bf7c86084b166873a17072bfef13530fea31af50a467c5bf576aff0", kill_on_drop: false }`
[INFO] [stdout] 77f0b9f00bf7c86084b166873a17072bfef13530fea31af50a467c5bf576aff0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ab02b7d74ace514e0e4a98fdbbb1816b34f44e93eed0ecd86a6b2edf5c9613e
[INFO] running `Command { std: "docker" "start" "-a" "8ab02b7d74ace514e0e4a98fdbbb1816b34f44e93eed0ecd86a6b2edf5c9613e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.5
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling rug v1.27.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking atomic_hilbert v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/atoms.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, HashSet};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/atoms.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, HashSet};
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AtomsWithOrd` is never used
[INFO] [stdout]   --> src/atoms.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait AtomsWithOrd : Ord {
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DLO` is never constructed
[INFO] [stdout]  --> src/dlo.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct DLO {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/dlo.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl DLO {
[INFO] [stdout]   | -------- associated function in this implementation
[INFO] [stdout] 8 |     fn new(q : Rational) -> DLO {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AtomsWithOrd` is never used
[INFO] [stdout]   --> src/atoms.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait AtomsWithOrd : Ord {
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DLO` is never constructed
[INFO] [stdout]  --> src/dlo.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct DLO {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/dlo.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl DLO {
[INFO] [stdout]   | -------- associated function in this implementation
[INFO] [stdout] 8 |     fn new(q : Rational) -> DLO {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 54s
[INFO] running `Command { std: "docker" "inspect" "8ab02b7d74ace514e0e4a98fdbbb1816b34f44e93eed0ecd86a6b2edf5c9613e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab02b7d74ace514e0e4a98fdbbb1816b34f44e93eed0ecd86a6b2edf5c9613e", kill_on_drop: false }`
[INFO] [stdout] 8ab02b7d74ace514e0e4a98fdbbb1816b34f44e93eed0ecd86a6b2edf5c9613e