[INFO] fetching crate simple2fa 0.1.0...
[INFO] checking simple2fa-0.1.0 against master#b2728d5426bab1d8c39709768c7e22b7f66dde5d for pr-135852
[INFO] extracting crate simple2fa 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate simple2fa 0.1.0 on toolchain b2728d5426bab1d8c39709768c7e22b7f66dde5d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple2fa 0.1.0
[INFO] finished tweaking crates.io crate simple2fa 0.1.0
[INFO] tweaked toml for crates.io crate simple2fa 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate simple2fa 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" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded totp-lite v1.0.3
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[INFO] [stdout] dd31543683b0df1d49497fc3f1b4df7a68a91775989243fdaa476d299da59acd
[INFO] running `Command { std: "docker" "start" "-a" "dd31543683b0df1d49497fc3f1b4df7a68a91775989243fdaa476d299da59acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd31543683b0df1d49497fc3f1b4df7a68a91775989243fdaa476d299da59acd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd31543683b0df1d49497fc3f1b4df7a68a91775989243fdaa476d299da59acd", kill_on_drop: false }`
[INFO] [stdout] dd31543683b0df1d49497fc3f1b4df7a68a91775989243fdaa476d299da59acd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93660c9fedbcaa36415739ab1ea1c31d75c11f505ada89cacfc919eb370080a1
[INFO] running `Command { std: "docker" "start" "-a" "93660c9fedbcaa36415739ab1ea1c31d75c11f505ada89cacfc919eb370080a1", kill_on_drop: false }`
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[INFO] [stderr]     Checking simple2fa v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `totp`
[INFO] [stdout]  --> src/lib.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use totp_lite::{totp, Sha1, DEFAULT_STEP, totp_custom};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BlockInput`, `FixedOutputDirty`, `Reset`, and `Update`
[INFO] [stdout]  --> src/lib.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 | use digest::{BlockInput, FixedOutputDirty, Reset, Update};
[INFO] [stdout]   |              ^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Hmac` and `Mac`
[INFO] [stdout]   --> src/lib.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | use hmac::{Hmac, Mac, NewMac};
[INFO] [stdout]    |            ^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NewMac`
[INFO] [stdout]   --> src/lib.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 | use hmac::{Hmac, Mac, NewMac};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EncodableLayout`
[INFO] [stdout]  --> src/bin/scratch.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use image::{EncodableLayout, Luma, DynamicImage};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/scratch.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     image.write_to(&mut bytes, image::ImageOutputFormat::Png);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let _ = image.write_to(&mut bytes, image::ImageOutputFormat::Png);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/bench.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `totp`
[INFO] [stdout]  --> src/lib.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use totp_lite::{totp, Sha1, DEFAULT_STEP, totp_custom};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BlockInput`, `FixedOutputDirty`, `Reset`, and `Update`
[INFO] [stdout]  --> src/lib.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 | use digest::{BlockInput, FixedOutputDirty, Reset, Update};
[INFO] [stdout]   |              ^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Hmac` and `Mac`
[INFO] [stdout]   --> src/lib.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | use hmac::{Hmac, Mac, NewMac};
[INFO] [stdout]    |            ^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EncodableLayout`
[INFO] [stdout]  --> src/bin/scratch.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use image::{EncodableLayout, Luma, DynamicImage};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NewMac`
[INFO] [stdout]   --> src/lib.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 | use hmac::{Hmac, Mac, NewMac};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/scratch.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     image.write_to(&mut bytes, image::ImageOutputFormat::Png);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let _ = image.write_to(&mut bytes, image::ImageOutputFormat::Png);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.15s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "93660c9fedbcaa36415739ab1ea1c31d75c11f505ada89cacfc919eb370080a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93660c9fedbcaa36415739ab1ea1c31d75c11f505ada89cacfc919eb370080a1", kill_on_drop: false }`
[INFO] [stdout] 93660c9fedbcaa36415739ab1ea1c31d75c11f505ada89cacfc919eb370080a1