[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] testing mkpankov/jwt-prototype against 1.55.0 for beta-1.56-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkpankov%2Fjwt-prototype" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mkpankov/jwt-prototype on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-2/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded biscuit v0.5.0
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e5f2c2bb85c306e2f0e4405249398c30f607019a849229d856a308e5c574e3b
[INFO] running `Command { std: "docker" "start" "-a" "3e5f2c2bb85c306e2f0e4405249398c30f607019a849229d856a308e5c574e3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e5f2c2bb85c306e2f0e4405249398c30f607019a849229d856a308e5c574e3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e5f2c2bb85c306e2f0e4405249398c30f607019a849229d856a308e5c574e3b", kill_on_drop: false }`
[INFO] [stdout] 3e5f2c2bb85c306e2f0e4405249398c30f607019a849229d856a308e5c574e3b
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38c8e8d207e85083e5487438f30178b3c1a902760f1bab165b7cdf432f0a342a
[INFO] running `Command { std: "docker" "start" "-a" "38c8e8d207e85083e5487438f30178b3c1a902760f1bab165b7cdf432f0a342a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling biscuit v0.5.0
[INFO] [stderr]    Compiling 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.93s
[INFO] running `Command { std: "docker" "inspect" "38c8e8d207e85083e5487438f30178b3c1a902760f1bab165b7cdf432f0a342a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38c8e8d207e85083e5487438f30178b3c1a902760f1bab165b7cdf432f0a342a", kill_on_drop: false }`
[INFO] [stdout] 38c8e8d207e85083e5487438f30178b3c1a902760f1bab165b7cdf432f0a342a
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b13068f59e4920be455777c2ddbac3b5ede618f39d3c2fea6dbecfdc6bf2555c
[INFO] running `Command { std: "docker" "start" "-a" "b13068f59e4920be455777c2ddbac3b5ede618f39d3c2fea6dbecfdc6bf2555c", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "b13068f59e4920be455777c2ddbac3b5ede618f39d3c2fea6dbecfdc6bf2555c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b13068f59e4920be455777c2ddbac3b5ede618f39d3c2fea6dbecfdc6bf2555c", kill_on_drop: false }`
[INFO] [stdout] b13068f59e4920be455777c2ddbac3b5ede618f39d3c2fea6dbecfdc6bf2555c
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dfa4d4ac0f541108f6fb6dfe7b211ce05c35858d482473ad663d4787a58ad99e
[INFO] running `Command { std: "docker" "start" "-a" "dfa4d4ac0f541108f6fb6dfe7b211ce05c35858d482473ad663d4787a58ad99e", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `nonce_counter` is never read
[INFO] [stderr]    --> src/main.rs:109:5
[INFO] [stderr]     |
[INFO] [stderr] 109 |     nonce_counter = nonce_counter + 1u8;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `jwt` (bin "jwt" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/jwt-223fbc3d393b0e62)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dfa4d4ac0f541108f6fb6dfe7b211ce05c35858d482473ad663d4787a58ad99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa4d4ac0f541108f6fb6dfe7b211ce05c35858d482473ad663d4787a58ad99e", kill_on_drop: false }`
[INFO] [stdout] dfa4d4ac0f541108f6fb6dfe7b211ce05c35858d482473ad663d4787a58ad99e