[INFO] cloning repository https://github.com/MerlinDE/toolbelt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MerlinDE/toolbelt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMerlinDE%2Ftoolbelt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMerlinDE%2Ftoolbelt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 857387d49b22aa9593448a143a67882d8012c15f
[INFO] checking MerlinDE/toolbelt against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMerlinDE%2Ftoolbelt" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MerlinDE/toolbelt
[INFO] finished tweaking git repo https://github.com/MerlinDE/toolbelt
[INFO] tweaked toml for git repo https://github.com/MerlinDE/toolbelt written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MerlinDE/toolbelt on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MerlinDE/toolbelt 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] [stderr]       Adding Inflector v0.11.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94e595fc1479e920cd78849e519fff485d4191c50027ae986a093f4cd15a2db8
[INFO] running `Command { std: "docker" "start" "-a" "94e595fc1479e920cd78849e519fff485d4191c50027ae986a093f4cd15a2db8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94e595fc1479e920cd78849e519fff485d4191c50027ae986a093f4cd15a2db8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94e595fc1479e920cd78849e519fff485d4191c50027ae986a093f4cd15a2db8", kill_on_drop: false }`
[INFO] [stdout] 94e595fc1479e920cd78849e519fff485d4191c50027ae986a093f4cd15a2db8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c20af5bbb46f9a7ff7e30fac3f2b35825801624541bcd2c9002e41c1da975f61
[INFO] running `Command { std: "docker" "start" "-a" "c20af5bbb46f9a7ff7e30fac3f2b35825801624541bcd2c9002e41c1da975f61", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking ignore v0.4.16
[INFO] [stderr]     Checking globwalk v0.8.0
[INFO] [stderr]     Checking toolbelt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fs::remove_dir_all(destination_path);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let _ = fs::remove_dir_all(destination_path);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.51s
[INFO] running `Command { std: "docker" "inspect" "c20af5bbb46f9a7ff7e30fac3f2b35825801624541bcd2c9002e41c1da975f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c20af5bbb46f9a7ff7e30fac3f2b35825801624541bcd2c9002e41c1da975f61", kill_on_drop: false }`
[INFO] [stdout] c20af5bbb46f9a7ff7e30fac3f2b35825801624541bcd2c9002e41c1da975f61