[INFO] cloning repository https://github.com/agrover/froyo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/agrover/froyo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fagrover%2Ffroyo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fagrover%2Ffroyo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e66f4b2e3935df9341ece789ea54ff7cc040b77d
[INFO] checking agrover/froyo against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fagrover%2Ffroyo" "/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/agrover/froyo 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 git repo https://github.com/agrover/froyo
[INFO] finished tweaking git repo https://github.com/agrover/froyo
[INFO] tweaked toml for git repo https://github.com/agrover/froyo written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/agrover/froyo 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 ansi_term v0.6.3
[INFO] [stderr]   Downloaded generics v0.4.4
[INFO] [stderr]   Downloaded newtype-derive-2018 v0.0.6
[INFO] [stderr]   Downloaded dbus v0.3.4
[INFO] [stderr]   Downloaded devicemapper v0.4.7
[INFO] [stderr]   Downloaded clap v1.3.2
[INFO] [stderr]   Downloaded bytesize v0.1.3
[INFO] [stderr]   Downloaded macro-attr-2018 v2.1.2
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ddfc4eb7303cd9541cf8d4e267a1cb40ce3754a5bc1be639bb6f63247856e2e
[INFO] running `Command { std: "docker" "start" "-a" "6ddfc4eb7303cd9541cf8d4e267a1cb40ce3754a5bc1be639bb6f63247856e2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ddfc4eb7303cd9541cf8d4e267a1cb40ce3754a5bc1be639bb6f63247856e2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ddfc4eb7303cd9541cf8d4e267a1cb40ce3754a5bc1be639bb6f63247856e2e", kill_on_drop: false }`
[INFO] [stdout] 6ddfc4eb7303cd9541cf8d4e267a1cb40ce3754a5bc1be639bb6f63247856e2e
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3105aa3c096fe9e21b27ab2df74b11326db68c0465765250a68c3f53d04fbf48
[INFO] running `Command { std: "docker" "start" "-a" "3105aa3c096fe9e21b27ab2df74b11326db68c0465765250a68c3f53d04fbf48", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling dbus v0.3.4
[INFO] [stderr]     Checking strsim v0.4.1
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking generics v0.4.4
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking ansi_term v0.6.3
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking newtype-derive-2018 v0.0.6
[INFO] [stderr]     Checking clap v1.3.2
[INFO] [stderr]     Checking macro-attr-2018 v2.1.2
[INFO] [stderr]     Checking bytesize v0.1.3
[INFO] [stderr]     Checking byteorder v0.3.13
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking devicemapper v0.4.7
[INFO] [stderr]     Checking uuid v1.1.2
[INFO] [stderr]     Checking froyo v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]   --> src/dbus_api.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use dbus;
[INFO] [stdout]    |     ^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/froyo.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]   --> src/dbus_api.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use dbus;
[INFO] [stdout]    |     ^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/froyo.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]   --> src/types.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use dbus;
[INFO] [stdout]    |     ^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/types.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use nix;
[INFO] [stdout]    |     ^^^ the item `nix` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]   --> src/types.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use serde;
[INFO] [stdout]    |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/types.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `term` is imported redundantly
[INFO] [stdout]   --> src/types.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use term;
[INFO] [stdout]    |     ^^^^ the item `term` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dbus` is imported redundantly
[INFO] [stdout]   --> src/types.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use dbus;
[INFO] [stdout]    |     ^^^^ the item `dbus` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/types.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use nix;
[INFO] [stdout]    |     ^^^ the item `nix` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]   --> src/types.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use serde;
[INFO] [stdout]    |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/types.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `term` is imported redundantly
[INFO] [stdout]   --> src/types.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use term;
[INFO] [stdout]    |     ^^^^ the item `term` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.47s
[INFO] running `Command { std: "docker" "inspect" "3105aa3c096fe9e21b27ab2df74b11326db68c0465765250a68c3f53d04fbf48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3105aa3c096fe9e21b27ab2df74b11326db68c0465765250a68c3f53d04fbf48", kill_on_drop: false }`
[INFO] [stdout] 3105aa3c096fe9e21b27ab2df74b11326db68c0465765250a68c3f53d04fbf48