[INFO] cloning repository https://github.com/master-hax/lil-jwt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/master-hax/lil-jwt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaster-hax%2Flil-jwt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaster-hax%2Flil-jwt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c05f36b9d5da4bb1e4629f94ae073f9d57da7f4
[INFO] checking master-hax/lil-jwt against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaster-hax%2Flil-jwt" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/master-hax/lil-jwt
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/master-hax/lil-jwt
[INFO] tweaked toml for git repo https://github.com/master-hax/lil-jwt written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/master-hax/lil-jwt on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/master-hax/lil-jwt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 279ade41d164b0c6e3b261ea1fb3e36454c5a9a2222e1cc4f83ba698e853045f
[INFO] running `Command { std: "docker" "start" "-a" "279ade41d164b0c6e3b261ea1fb3e36454c5a9a2222e1cc4f83ba698e853045f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "279ade41d164b0c6e3b261ea1fb3e36454c5a9a2222e1cc4f83ba698e853045f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279ade41d164b0c6e3b261ea1fb3e36454c5a9a2222e1cc4f83ba698e853045f", kill_on_drop: false }`
[INFO] [stdout] 279ade41d164b0c6e3b261ea1fb3e36454c5a9a2222e1cc4f83ba698e853045f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af174273fd08ec7865a4ce73fa66207d28210288107a0c5eec30ad18054316a7
[INFO] running `Command { std: "docker" "start" "-a" "af174273fd08ec7865a4ce73fa66207d28210288107a0c5eec30ad18054316a7", kill_on_drop: false }`
[INFO] [stderr]     Checking embedded-io v0.6.1
[INFO] [stderr]     Checking numtoa v0.3.1
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking lil-json v0.1.2
[INFO] [stderr]     Checking embedded-io-adapters v0.6.2
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking lil-jwt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Update`
[INFO] [stdout]  --> src/authenticated_writer.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use hmac::{digest::{self, CtOutput, Update}, Mac};
[INFO] [stdout]   |                                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Empty` is never constructed
[INFO] [stdout]   --> src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Empty{}
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_string` is never used
[INFO] [stdout]    --> src/lib.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout]  91 | impl JwtType {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn from_string(string: &str) -> Option<Self> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/lib.rs:33:84
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn write(& mut self, data: &[u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(data.len()) }
[INFO] [stdout]    |                                                                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/lib.rs:33:86
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn write(& mut self, data: &[u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(data.len()) }
[INFO] [stdout]    |                                                                                      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lil-jwt` (lib) due to 2 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `Update`
[INFO] [stdout]  --> src/authenticated_writer.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use hmac::{digest::{self, CtOutput, Update}, Mac};
[INFO] [stdout]   |                                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Empty` is never constructed
[INFO] [stdout]   --> src/lib.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Empty{}
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_string` is never used
[INFO] [stdout]    --> src/lib.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout]  91 | impl JwtType {
[INFO] [stdout]     | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn from_string(string: &str) -> Option<Self> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/lib.rs:33:84
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn write(& mut self, data: &[u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(data.len()) }
[INFO] [stdout]    |                                                                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/lib.rs:33:86
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn write(& mut self, data: &[u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(data.len()) }
[INFO] [stdout]    |                                                                                      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lil-jwt` (lib test) due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "af174273fd08ec7865a4ce73fa66207d28210288107a0c5eec30ad18054316a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af174273fd08ec7865a4ce73fa66207d28210288107a0c5eec30ad18054316a7", kill_on_drop: false }`
[INFO] [stdout] af174273fd08ec7865a4ce73fa66207d28210288107a0c5eec30ad18054316a7