[INFO] fetching crate serde_cose 0.1.4...
[INFO] checking serde_cose-0.1.4 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate serde_cose 0.1.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate serde_cose 0.1.4 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-2/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2f934131a9ec40a35144a7c6e85dcaa5b927ef02c80a1cab83ecf37acbe38a5
[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" "f2f934131a9ec40a35144a7c6e85dcaa5b927ef02c80a1cab83ecf37acbe38a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2f934131a9ec40a35144a7c6e85dcaa5b927ef02c80a1cab83ecf37acbe38a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2f934131a9ec40a35144a7c6e85dcaa5b927ef02c80a1cab83ecf37acbe38a5", kill_on_drop: false }`
[INFO] [stdout] f2f934131a9ec40a35144a7c6e85dcaa5b927ef02c80a1cab83ecf37acbe38a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 406cb325becfacdbecc1508057dd9f9ab4f3ea3694cd05ed911bde9e68981738
[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" "406cb325becfacdbecc1508057dd9f9ab4f3ea3694cd05ed911bde9e68981738", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking zeroize v1.1.1
[INFO] [stderr]     Checking subtle v2.3.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking curve25519-dalek v3.0.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.116
[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 v1.0.116
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking ed25519-zebra v2.2.0
[INFO] [stderr]     Checking serde_cbor v0.11.1
[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: panic message is not a string literal
[INFO] [stdout]   --> examples/verify_sign1_ed25519.rs:35:22
[INFO] [stdout]    |
[INFO] [stdout] 35 |         id => panic!(format!("user {} not found", id)),
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 35 -         id => panic!(format!("user {} not found", id)),
[INFO] [stdout] 35 +         id => panic!("user {} not found", id),
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `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 41.69s
[INFO] running `Command { std: "docker" "inspect" "406cb325becfacdbecc1508057dd9f9ab4f3ea3694cd05ed911bde9e68981738", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "406cb325becfacdbecc1508057dd9f9ab4f3ea3694cd05ed911bde9e68981738", kill_on_drop: false }`
[INFO] [stdout] 406cb325becfacdbecc1508057dd9f9ab4f3ea3694cd05ed911bde9e68981738