[INFO] cloning repository https://github.com/mkpankov/jwt-prototype
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mkpankov/jwt-prototype" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkpankov%2Fjwt-prototype", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkpankov%2Fjwt-prototype'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b83e220fe8162ef4a6a320bff8e3e7d90e45751
[INFO] checking mkpankov/jwt-prototype against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkpankov%2Fjwt-prototype" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mkpankov/jwt-prototype on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mkpankov/jwt-prototype
[INFO] finished tweaking git repo https://github.com/mkpankov/jwt-prototype
[INFO] tweaked toml for git repo https://github.com/mkpankov/jwt-prototype written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mkpankov/jwt-prototype already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39c822b4d8842e86c2e8de9a632cd022073403b66d98e6ad4a5e94d5a5c44f34
[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" "39c822b4d8842e86c2e8de9a632cd022073403b66d98e6ad4a5e94d5a5c44f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39c822b4d8842e86c2e8de9a632cd022073403b66d98e6ad4a5e94d5a5c44f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39c822b4d8842e86c2e8de9a632cd022073403b66d98e6ad4a5e94d5a5c44f34", kill_on_drop: false }`
[INFO] [stdout] 39c822b4d8842e86c2e8de9a632cd022073403b66d98e6ad4a5e94d5a5c44f34
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9a99e4e80c2777fb0eb148152bb43b702dbcea5eeeb7cd85f612e52368306972
[INFO] running `Command { std: "docker" "start" "-a" "9a99e4e80c2777fb0eb148152bb43b702dbcea5eeeb7cd85f612e52368306972", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking biscuit v0.5.0
[INFO] [stderr]     Checking jwt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `nonce_counter` is never read
[INFO] [stdout]    --> src/main.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     nonce_counter = nonce_counter + 1u8;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `nonce_counter` is never read
[INFO] [stdout]    --> src/main.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 |     nonce_counter = nonce_counter + 1u8;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.99s
[INFO] running `Command { std: "docker" "inspect" "9a99e4e80c2777fb0eb148152bb43b702dbcea5eeeb7cd85f612e52368306972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a99e4e80c2777fb0eb148152bb43b702dbcea5eeeb7cd85f612e52368306972", kill_on_drop: false }`
[INFO] [stdout] 9a99e4e80c2777fb0eb148152bb43b702dbcea5eeeb7cd85f612e52368306972