[INFO] fetching crate lil-jwt 0.1.0...
[INFO] checking lil-jwt-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate lil-jwt 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate lil-jwt 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate lil-jwt 0.1.0
[INFO] tweaked toml for crates.io crate lil-jwt 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lil-jwt 0.1.0 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 crates.io crate lil-jwt 0.1.0 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 875eb21c916a7ff3432b32b9a4c865f81fc681020fc592c2ad649714efe539ef
[INFO] running `Command { std: "docker" "start" "-a" "875eb21c916a7ff3432b32b9a4c865f81fc681020fc592c2ad649714efe539ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "875eb21c916a7ff3432b32b9a4c865f81fc681020fc592c2ad649714efe539ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "875eb21c916a7ff3432b32b9a4c865f81fc681020fc592c2ad649714efe539ef", kill_on_drop: false }`
[INFO] [stdout] 875eb21c916a7ff3432b32b9a4c865f81fc681020fc592c2ad649714efe539ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d9bedec2d90a84b10f305c1077a4b7a96f3de8123454ae94f14b32588a2f9fc2
[INFO] running `Command { std: "docker" "start" "-a" "d9bedec2d90a84b10f305c1077a4b7a96f3de8123454ae94f14b32588a2f9fc2", kill_on_drop: false }`
[INFO] [stderr]     Checking embedded-io v0.6.1
[INFO] [stderr]     Checking numtoa v0.3.1
[INFO] [stderr]     Checking cpufeatures v0.2.17
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking embedded-io-adapters v0.6.2
[INFO] [stderr]     Checking lil-json v0.1.2
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking lil-jwt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BASE64_URL_SAFE`
[INFO] [stdout]  --> src/lib.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use base64::{prelude::{BASE64_URL_SAFE, BASE64_URL_SAFE_NO_PAD}, DecodeError, DecodeSliceError, Engine};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `digest::Update`
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | use hmac::{digest::Update, Hmac, Mac};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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] 
[INFO] [stdout] warning: unused import: `BASE64_URL_SAFE`
[INFO] [stdout]  --> src/lib.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use base64::{prelude::{BASE64_URL_SAFE, BASE64_URL_SAFE_NO_PAD}, DecodeError, DecodeSliceError, Engine};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `digest::Update`
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | use hmac::{digest::Update, Hmac, Mac};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Empty` is never constructed
[INFO] [stdout]   --> src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | 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:92:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | impl JwtType {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 92 |     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:22:84
[INFO] [stdout]    |
[INFO] [stdout] 22 |     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:22:86
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn write(& mut self, data: &[u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(data.len()) }
[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:27:83
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn read(&mut self, _: &mut [u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(0) }
[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:27:85
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn read(&mut self, _: &mut [u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(0) }
[INFO] [stdout]    |                                                                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lil-jwt` (lib test) due to 4 previous errors; 5 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] 
[INFO] [stdout] warning: struct `Empty` is never constructed
[INFO] [stdout]   --> src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | 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:92:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | impl JwtType {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 92 |     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:22:84
[INFO] [stdout]    |
[INFO] [stdout] 22 |     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:22:86
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn write(& mut self, data: &[u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(data.len()) }
[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:27:83
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn read(&mut self, _: &mut [u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(0) }
[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:27:85
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn read(&mut self, _: &mut [u8]) -> Result<usize, <Self as ErrorType>::Error> { Ok(0) }
[INFO] [stdout]    |                                                                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lil-jwt` (lib) due to 4 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d9bedec2d90a84b10f305c1077a4b7a96f3de8123454ae94f14b32588a2f9fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9bedec2d90a84b10f305c1077a4b7a96f3de8123454ae94f14b32588a2f9fc2", kill_on_drop: false }`
[INFO] [stdout] d9bedec2d90a84b10f305c1077a4b7a96f3de8123454ae94f14b32588a2f9fc2