[INFO] cloning repository https://github.com/pop-os/bustd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pop-os/bustd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpop-os%2Fbustd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpop-os%2Fbustd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 20acbe9012547f63e19e8bc343610f0dc2e366a5
[INFO] checking pop-os/bustd against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpop-os%2Fbustd" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pop-os/bustd 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/pop-os/bustd
[INFO] finished tweaking git repo https://github.com/pop-os/bustd
[INFO] tweaked toml for git repo https://github.com/pop-os/bustd written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/pop-os/bustd 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 procfs v0.9.1
[INFO] [stderr]   Downloaded daemonize v0.4.1
[INFO] [stderr]   Downloaded boxfnonce v0.1.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.27
[INFO] [stderr]   Downloaded cc v1.0.68
[INFO] [stderr]   Downloaded syn v1.0.73
[INFO] [stderr]   Downloaded libc v0.2.97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ad6687ee28c0011434a0d7790e902b97a55cfe49e947a579128c8f6461d72326
[INFO] running `Command { std: "docker" "start" "-a" "ad6687ee28c0011434a0d7790e902b97a55cfe49e947a579128c8f6461d72326", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad6687ee28c0011434a0d7790e902b97a55cfe49e947a579128c8f6461d72326", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6687ee28c0011434a0d7790e902b97a55cfe49e947a579128c8f6461d72326", kill_on_drop: false }`
[INFO] [stdout] ad6687ee28c0011434a0d7790e902b97a55cfe49e947a579128c8f6461d72326
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4c7c49f4b43bf4e8b2df04de1fede8b42a194d2a426f3e1a5ca251b047023173
[INFO] running `Command { std: "docker" "start" "-a" "4c7c49f4b43bf4e8b2df04de1fede8b42a194d2a426f3e1a5ca251b047023173", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]     Checking boxfnonce v0.1.1
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking daemonize v0.4.1
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]    Compiling bustd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `cc` is imported redundantly
[INFO] [stdout]  --> build.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use cc;
[INFO] [stdout]   |     ^^ the item `cc` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking procfs v0.9.1
[INFO] [stderr]    Compiling argh_derive v0.1.5
[INFO] [stderr]     Checking argh v0.1.5
[INFO] [stdout] warning: the item `argh` is imported redundantly
[INFO] [stdout]  --> src/cli.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use argh;
[INFO] [stdout]   |     ^^^^ the item `argh` 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 `libc` is imported redundantly
[INFO] [stdout]  --> src/errno.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use libc::{self, c_int};
[INFO] [stdout]   |            ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `argh` is imported redundantly
[INFO] [stdout]  --> src/cli.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use argh;
[INFO] [stdout]   |     ^^^^ the item `argh` 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 `libc` is imported redundantly
[INFO] [stdout]  --> src/errno.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use libc::{self, c_int};
[INFO] [stdout]   |            ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `procfs` is imported redundantly
[INFO] [stdout]    --> src/process.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     use procfs;
[INFO] [stdout]     |         ^^^^^^ the item `procfs` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `group` is never read
[INFO] [stdout]   --> src/cli.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub struct CommandLineArgs {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub group: bool,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/error.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 |     ProcessNotFound(&'static str),
[INFO] [stdout]   |     --------------- ^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 |     ProcessNotFound(()),
[INFO] [stdout]   |                     ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `reason` is never read
[INFO] [stdout]   --> src/error.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Io {
[INFO] [stdout]    |     -- field in this variant
[INFO] [stdout] 14 |         reason: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error` is never read
[INFO] [stdout]   --> src/error.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Daemonize {
[INFO] [stdout]    |     --------- field in this variant
[INFO] [stdout] 17 |         error: DaemonizeError,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error` is never read
[INFO] [stdout]   --> src/error.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Unicode {
[INFO] [stdout]    |     ------- field in this variant
[INFO] [stdout] 20 |         error: Utf8Error,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error` is never read
[INFO] [stdout]   --> src/error.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     ThreadError {
[INFO] [stdout]    |     ----------- field in this variant
[INFO] [stdout] 34 |         error: Box<dyn Any + Send + 'static>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `major` and `minor` are never read
[INFO] [stdout]  --> src/linux_version.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct LinuxVersion {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 3 |     pub major: u8,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 4 |     pub minor: u8,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LinuxVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `group` is never read
[INFO] [stdout]   --> src/cli.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub struct CommandLineArgs {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub group: bool,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/error.rs:9:21
[INFO] [stdout]   |
[INFO] [stdout] 9 |     ProcessNotFound(&'static str),
[INFO] [stdout]   |     --------------- ^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 |     ProcessNotFound(()),
[INFO] [stdout]   |                     ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `reason` is never read
[INFO] [stdout]   --> src/error.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Io {
[INFO] [stdout]    |     -- field in this variant
[INFO] [stdout] 14 |         reason: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error` is never read
[INFO] [stdout]   --> src/error.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Daemonize {
[INFO] [stdout]    |     --------- field in this variant
[INFO] [stdout] 17 |         error: DaemonizeError,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error` is never read
[INFO] [stdout]   --> src/error.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Unicode {
[INFO] [stdout]    |     ------- field in this variant
[INFO] [stdout] 20 |         error: Utf8Error,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `error` is never read
[INFO] [stdout]   --> src/error.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     ThreadError {
[INFO] [stdout]    |     ----------- field in this variant
[INFO] [stdout] 34 |         error: Box<dyn Any + Send + 'static>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `major` and `minor` are never read
[INFO] [stdout]  --> src/linux_version.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct LinuxVersion {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 3 |     pub major: u8,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout] 4 |     pub minor: u8,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LinuxVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.69s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: daemonize v0.4.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "4c7c49f4b43bf4e8b2df04de1fede8b42a194d2a426f3e1a5ca251b047023173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c7c49f4b43bf4e8b2df04de1fede8b42a194d2a426f3e1a5ca251b047023173", kill_on_drop: false }`
[INFO] [stdout] 4c7c49f4b43bf4e8b2df04de1fede8b42a194d2a426f3e1a5ca251b047023173