[INFO] fetching crate serde_cose 0.1.4...
[INFO] checking serde_cose-0.1.4 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate serde_cose 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde_cose 0.1.4 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_cose 0.1.4
[INFO] finished tweaking crates.io crate serde_cose 0.1.4
[INFO] tweaked toml for crates.io crate serde_cose 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate serde_cose 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] caf4476018d9d86f9e4505d55b934d0501f1702c4feae66ab81badf8140f5127
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "caf4476018d9d86f9e4505d55b934d0501f1702c4feae66ab81badf8140f5127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "caf4476018d9d86f9e4505d55b934d0501f1702c4feae66ab81badf8140f5127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caf4476018d9d86f9e4505d55b934d0501f1702c4feae66ab81badf8140f5127", kill_on_drop: false }`
[INFO] [stdout] caf4476018d9d86f9e4505d55b934d0501f1702c4feae66ab81badf8140f5127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9cf0c475407d1dc076f0f50cce149c55a6e76031f56b0df1fb6f7e9bc7f32476
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9cf0c475407d1dc076f0f50cce149c55a6e76031f56b0df1fb6f7e9bc7f32476", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking zeroize v1.1.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking curve25519-dalek v3.0.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking ed25519-zebra v2.2.0
[INFO] [stderr]     Checking serde_cose v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `convert::TryFrom`
[INFO] [stdout]   --> src/sign1.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::{collections, convert::TryFrom};
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/sign1.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         key.verify(&mut sign1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.26s
[INFO] running `Command { std: "docker" "inspect" "9cf0c475407d1dc076f0f50cce149c55a6e76031f56b0df1fb6f7e9bc7f32476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cf0c475407d1dc076f0f50cce149c55a6e76031f56b0df1fb6f7e9bc7f32476", kill_on_drop: false }`
[INFO] [stdout] 9cf0c475407d1dc076f0f50cce149c55a6e76031f56b0df1fb6f7e9bc7f32476