[INFO] fetching crate cryptohelpers 2.0.0...
[INFO] checking cryptohelpers-2.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate cryptohelpers 2.0.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate cryptohelpers 2.0.0
[INFO] finished tweaking crates.io crate cryptohelpers 2.0.0
[INFO] tweaked toml for crates.io crate cryptohelpers 2.0.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cryptohelpers 2.0.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 64 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.13.1 (available: v0.22.1)
[INFO] [stderr]       Adding crc v1.8.1 (available: v3.3.0)
[INFO] [stderr]       Adding getrandom v0.1.16 (available: v0.3.4)
[INFO] [stderr]       Adding hex-literal v0.3.4 (available: v1.1.0)
[INFO] [stderr]       Adding hmac v0.9.0 (available: v0.12.1)
[INFO] [stderr]       Adding pbkdf2 v0.5.0 (available: v0.12.2)
[INFO] [stderr]       Adding sha2 v0.9.9 (available: v0.10.9)
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 74975505c65c97cce65756aab175ab4500a0f25f71ae85a346f25c4260c88fe2
[INFO] running `Command { std: "docker" "start" "-a" "74975505c65c97cce65756aab175ab4500a0f25f71ae85a346f25c4260c88fe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74975505c65c97cce65756aab175ab4500a0f25f71ae85a346f25c4260c88fe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74975505c65c97cce65756aab175ab4500a0f25f71ae85a346f25c4260c88fe2", kill_on_drop: false }`
[INFO] [stdout] 74975505c65c97cce65756aab175ab4500a0f25f71ae85a346f25c4260c88fe2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a060133f1d531695776b8bc802281328d180628fab67e58874191bfd125ec072
[INFO] running `Command { std: "docker" "start" "-a" "a060133f1d531695776b8bc802281328d180628fab67e58874191bfd125ec072", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]     Checking opaque-debug v0.3.1
[INFO] [stderr]     Checking cpufeatures v0.2.17
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.9.1
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking hmac v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking pbkdf2 v0.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking openssl v0.10.75
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking cryptohelpers v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Cow<'_, PKey<T>>, Infallible>
[INFO] [stdout]   --> src/rsa/containers.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     {
[INFO] [stdout] 58 | |     Ok(Cow::Borrowed(self))
[INFO] [stdout] 59 | |     }
[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<Cow<'_, PKey<T>>, Infallible>
[INFO] [stdout]   --> src/rsa/containers.rs:58:2
[INFO] [stdout]    |
[INFO] [stdout] 58 |     Ok(Cow::Borrowed(self))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Cow<'_, PKey<T>>, Infallible>
[INFO] [stdout]   --> src/rsa/containers.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | /     {
[INFO] [stdout] 67 | |     Ok(Cow::Borrowed(self))
[INFO] [stdout] 68 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Cow<'_, PKey<T>>, Infallible>
[INFO] [stdout]   --> src/rsa/containers.rs:67:2
[INFO] [stdout]    |
[INFO] [stdout] 67 |     Ok(Cow::Borrowed(self))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cryptohelpers` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Cow<'_, PKey<T>>, Infallible>
[INFO] [stdout]   --> src/rsa/containers.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     {
[INFO] [stdout] 58 | |     Ok(Cow::Borrowed(self))
[INFO] [stdout] 59 | |     }
[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<Cow<'_, PKey<T>>, Infallible>
[INFO] [stdout]   --> src/rsa/containers.rs:58:2
[INFO] [stdout]    |
[INFO] [stdout] 58 |     Ok(Cow::Borrowed(self))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Cow<'_, PKey<T>>, Infallible>
[INFO] [stdout]   --> src/rsa/containers.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | /     {
[INFO] [stdout] 67 | |     Ok(Cow::Borrowed(self))
[INFO] [stdout] 68 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Cow<'_, PKey<T>>, Infallible>
[INFO] [stdout]   --> src/rsa/containers.rs:67:2
[INFO] [stdout]    |
[INFO] [stdout] 67 |     Ok(Cow::Borrowed(self))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cryptohelpers` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "a060133f1d531695776b8bc802281328d180628fab67e58874191bfd125ec072", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a060133f1d531695776b8bc802281328d180628fab67e58874191bfd125ec072", kill_on_drop: false }`
[INFO] [stdout] a060133f1d531695776b8bc802281328d180628fab67e58874191bfd125ec072
