[INFO] cloning repository https://github.com/volks73/groom
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/volks73/groom" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolks73%2Fgroom", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolks73%2Fgroom'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f9a6ac5afed2471bc32abcd467b9e7656756ba09
[INFO] checking volks73/groom against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolks73%2Fgroom" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/volks73/groom on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/volks73/groom
[INFO] finished tweaking git repo https://github.com/volks73/groom
[INFO] tweaked toml for git repo https://github.com/volks73/groom written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/volks73/groom 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atty v0.2.6
[INFO] [stderr]   Downloaded unsafe-libyaml v0.2.4
[INFO] [stderr]   Downloaded loggerv v0.7.2
[INFO] [stderr]   Downloaded serde_yaml v0.9.14
[INFO] [stderr]   Downloaded clap v2.29.4
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2967da3753b1f65aad67bea1aa155a7acd383a310557b262638469e28a8909af
[INFO] running `Command { std: "docker" "start" "-a" "2967da3753b1f65aad67bea1aa155a7acd383a310557b262638469e28a8909af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2967da3753b1f65aad67bea1aa155a7acd383a310557b262638469e28a8909af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2967da3753b1f65aad67bea1aa155a7acd383a310557b262638469e28a8909af", kill_on_drop: false }`
[INFO] [stdout] 2967da3753b1f65aad67bea1aa155a7acd383a310557b262638469e28a8909af
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c47bdd0cea131decf65883dc5a3bb4de7dc1c774a076e1ad94c2a49e37f069b0
[INFO] running `Command { std: "docker" "start" "-a" "c47bdd0cea131decf65883dc5a3bb4de7dc1c774a076e1ad94c2a49e37f069b0", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling serde v1.0.150
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]    Compiling Groom v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking unsafe-libyaml v0.2.4
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking clap v2.29.4
[INFO] [stderr]     Checking loggerv v0.7.2
[INFO] [stderr]     Checking serde_yaml v0.9.14
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stdout] warning: the item `mustache` is imported redundantly
[INFO] [stdout]   --> src/groom.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use mustache;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:68:1
[INFO] [stdout]    |
[INFO] [stdout] 68 | extern crate mustache;
[INFO] [stdout]    | ---------------------- the item `mustache` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/groom.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 | use serde_yaml::{self, Value};
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:69:1
[INFO] [stdout]    |
[INFO] [stdout] 69 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mustache` is imported redundantly
[INFO] [stdout]   --> src/groom.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use mustache;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:68:1
[INFO] [stdout]    |
[INFO] [stdout] 68 | extern crate mustache;
[INFO] [stdout]    | ---------------------- the item `mustache` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/groom.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 | use serde_yaml::{self, Value};
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:69:1
[INFO] [stdout]    |
[INFO] [stdout] 69 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.48s
[INFO] running `Command { std: "docker" "inspect" "c47bdd0cea131decf65883dc5a3bb4de7dc1c774a076e1ad94c2a49e37f069b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c47bdd0cea131decf65883dc5a3bb4de7dc1c774a076e1ad94c2a49e37f069b0", kill_on_drop: false }`
[INFO] [stdout] c47bdd0cea131decf65883dc5a3bb4de7dc1c774a076e1ad94c2a49e37f069b0
[INFO] checking volks73/groom against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolks73%2Fgroom" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/volks73/groom on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/volks73/groom
[INFO] finished tweaking git repo https://github.com/volks73/groom
[INFO] tweaked toml for git repo https://github.com/volks73/groom written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/volks73/groom 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac738026177ced1587924a6452ea20859e9fb91e85bdb164917888e4305fd06d
[INFO] running `Command { std: "docker" "start" "-a" "ac738026177ced1587924a6452ea20859e9fb91e85bdb164917888e4305fd06d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac738026177ced1587924a6452ea20859e9fb91e85bdb164917888e4305fd06d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac738026177ced1587924a6452ea20859e9fb91e85bdb164917888e4305fd06d", kill_on_drop: false }`
[INFO] [stdout] ac738026177ced1587924a6452ea20859e9fb91e85bdb164917888e4305fd06d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d547c4c8c322ad38cef00ea699f551decd3d718ab52498a9078d48b67dbd004c
[INFO] running `Command { std: "docker" "start" "-a" "d547c4c8c322ad38cef00ea699f551decd3d718ab52498a9078d48b67dbd004c", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.150
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking unsafe-libyaml v0.2.4
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling Groom v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking loggerv v0.7.2
[INFO] [stderr]     Checking clap v2.29.4
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]     Checking serde_yaml v0.9.14
[INFO] [stdout] warning: the item `mustache` is imported redundantly
[INFO] [stdout]   --> src/groom.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use mustache;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:68:1
[INFO] [stdout]    |
[INFO] [stdout] 68 | extern crate mustache;
[INFO] [stdout]    | ---------------------- the item `mustache` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/groom.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 | use serde_yaml::{self, Value};
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:69:1
[INFO] [stdout]    |
[INFO] [stdout] 69 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mustache` is imported redundantly
[INFO] [stdout]   --> src/groom.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use mustache;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:68:1
[INFO] [stdout]    |
[INFO] [stdout] 68 | extern crate mustache;
[INFO] [stdout]    | ---------------------- the item `mustache` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/groom.rs:19:18
[INFO] [stdout]    |
[INFO] [stdout] 19 | use serde_yaml::{self, Value};
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:69:1
[INFO] [stdout]    |
[INFO] [stdout] 69 | extern crate serde_yaml;
[INFO] [stdout]    | ------------------------ the item `serde_yaml` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.44s
[INFO] running `Command { std: "docker" "inspect" "d547c4c8c322ad38cef00ea699f551decd3d718ab52498a9078d48b67dbd004c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d547c4c8c322ad38cef00ea699f551decd3d718ab52498a9078d48b67dbd004c", kill_on_drop: false }`
[INFO] [stdout] d547c4c8c322ad38cef00ea699f551decd3d718ab52498a9078d48b67dbd004c