[INFO] fetching crate synchronizer 0.1.1...
[INFO] checking synchronizer-0.1.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate synchronizer 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate synchronizer 0.1.1
[INFO] finished tweaking crates.io crate synchronizer 0.1.1
[INFO] tweaked toml for crates.io crate synchronizer 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate synchronizer 0.1.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate synchronizer 0.1.1 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e7ebff5e8d3c5d178cac6569d8549ec669dd67cefc47e6f6b13f1d09d57ae49
[INFO] running `Command { std: "docker" "start" "-a" "2e7ebff5e8d3c5d178cac6569d8549ec669dd67cefc47e6f6b13f1d09d57ae49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e7ebff5e8d3c5d178cac6569d8549ec669dd67cefc47e6f6b13f1d09d57ae49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e7ebff5e8d3c5d178cac6569d8549ec669dd67cefc47e6f6b13f1d09d57ae49", kill_on_drop: false }`
[INFO] [stdout] 2e7ebff5e8d3c5d178cac6569d8549ec669dd67cefc47e6f6b13f1d09d57ae49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c53a659fc0abc215c5fc121e68dd0e00da18bf9ba26045a4a7d9d190da0023d9
[INFO] running `Command { std: "docker" "start" "-a" "c53a659fc0abc215c5fc121e68dd0e00da18bf9ba26045a4a7d9d190da0023d9", kill_on_drop: false }`
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking synchronizer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `ChecksError` is never used
[INFO] [stdout]  --> src/checks.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum ChecksError {
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dependencies` is never constructed
[INFO] [stdout]   --> src/checks.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Dependencies;
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `whicher`, `installed`, and `container` are never used
[INFO] [stdout]   --> src/checks.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Dependencies {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 25 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn whicher(bin: &str) -> Result<bool, ChecksError> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn installed(&self) -> Result<bool, ChecksError> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn container(&self) -> Result<bool, ChecksError> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SyncError` is never used
[INFO] [stdout]  --> src/error.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum SyncError {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/logic.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Synchronizer {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 34 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ip` is never used
[INFO] [stdout]   --> src/logic.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn ip(addr: &str) -> Result<Ipv4Addr, SyncError> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `NoHostsConfigured` and `DirectoryDoesntExist` are never constructed
[INFO] [stdout]  --> src/error.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum SyncError {
[INFO] [stdout]   |          --------- variants in this enum
[INFO] [stdout] 4 |     NoHostsConfigured,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     InvalidIPv4,
[INFO] [stdout] 6 |     DirectoryDoesntExist,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/logic.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Synchronizer {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 34 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.66s
[INFO] running `Command { std: "docker" "inspect" "c53a659fc0abc215c5fc121e68dd0e00da18bf9ba26045a4a7d9d190da0023d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c53a659fc0abc215c5fc121e68dd0e00da18bf9ba26045a4a7d9d190da0023d9", kill_on_drop: false }`
[INFO] [stdout] c53a659fc0abc215c5fc121e68dd0e00da18bf9ba26045a4a7d9d190da0023d9