[INFO] fetching crate powco 0.1.3...
[INFO] checking powco-0.1.3 against try#377afada703be70d3fdff9164a481570a3cba7fe for pr-113240
[INFO] extracting crate powco 0.1.3 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate powco 0.1.3 on toolchain 377afada703be70d3fdff9164a481570a3cba7fe
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate powco 0.1.3
[INFO] finished tweaking crates.io crate powco 0.1.3
[INFO] tweaked toml for crates.io crate powco 0.1.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3369f664893c2cd21dd2953b48e30eb184cacf6431dddef54240df1a8cad668c
[INFO] running `Command { std: "docker" "start" "-a" "3369f664893c2cd21dd2953b48e30eb184cacf6431dddef54240df1a8cad668c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3369f664893c2cd21dd2953b48e30eb184cacf6431dddef54240df1a8cad668c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3369f664893c2cd21dd2953b48e30eb184cacf6431dddef54240df1a8cad668c", kill_on_drop: false }`
[INFO] [stdout] 3369f664893c2cd21dd2953b48e30eb184cacf6431dddef54240df1a8cad668c
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c5ac00778980fb39a5c87c4d19356beaf4efc284716ef2e5b1dc90b05cad21f
[INFO] running `Command { std: "docker" "start" "-a" "2c5ac00778980fb39a5c87c4d19356beaf4efc284716ef2e5b1dc90b05cad21f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]    Compiling syn v2.0.22
[INFO] [stderr]    Compiling secp256k1-sys v0.4.2
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking generic-array v0.9.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]    Compiling secp256k1 v0.12.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking bitcoin_hashes v0.10.0
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking ripemd160 v0.7.0
[INFO] [stderr]     Checking murmur3 v0.4.1
[INFO] [stderr]     Checking dns-lookup v0.9.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking bech32 v0.8.1
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking secp256k1 v0.20.3
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking rust-base58 v0.0.4
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]     Checking bitcoin v0.27.1
[INFO] [stderr]     Checking secp256k1 v0.21.3
[INFO] [stderr]     Checking openssl v0.10.55
[INFO] [stderr]     Checking sv v0.2.2
[INFO] [stderr]     Checking serde v1.0.164
[INFO] [stderr]     Checking native-tls v0.2.11
[INFO] [stderr]     Checking tokio-util v0.7.8
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking h2 v0.3.20
[INFO] [stderr]     Checking serde_json v1.0.99
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.18
[INFO] [stderr]     Checking powco v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Keys` is never constructed
[INFO] [stdout]   --> src/lib.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub struct Keys {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `generate`, `validate`, `validate_identifier`, and `validate_secret` are never used
[INFO] [stdout]   --> src/lib.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 39 |     impl Keys {
[INFO] [stdout]    |     --------- associated items in this implementation
[INFO] [stdout] 40 |         pub fn generate() -> Keys {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |         pub fn validate(&self) -> bool {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |         fn validate_identifier(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |         fn validate_secret(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Client` is never constructed
[INFO] [stdout]    --> src/lib.rs:108:16
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub struct Client {
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `has_valid_keys` and `list_available_jobs` are never used
[INFO] [stdout]    --> src/lib.rs:134:16
[INFO] [stdout]     |
[INFO] [stdout] 132 |     impl Client {
[INFO] [stdout]     |     ----------- methods in this implementation
[INFO] [stdout] 133 |
[INFO] [stdout] 134 |         pub fn has_valid_keys(&self) -> bool {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |         pub async fn list_available_jobs(&self) -> Jobs {
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.69s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[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" "2c5ac00778980fb39a5c87c4d19356beaf4efc284716ef2e5b1dc90b05cad21f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c5ac00778980fb39a5c87c4d19356beaf4efc284716ef2e5b1dc90b05cad21f", kill_on_drop: false }`
[INFO] [stdout] 2c5ac00778980fb39a5c87c4d19356beaf4efc284716ef2e5b1dc90b05cad21f