[INFO] fetching crate double-ratchet-signal 0.1.3...
[INFO] checking double-ratchet-signal-0.1.3 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate double-ratchet-signal 0.1.3 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate double-ratchet-signal 0.1.3
[INFO] finished tweaking crates.io crate double-ratchet-signal 0.1.3
[INFO] tweaked toml for crates.io crate double-ratchet-signal 0.1.3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate double-ratchet-signal 0.1.3 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 51 packages to latest compatible versions
[INFO] [stderr]       Adding aes v0.6.0 (available: v0.8.4)
[INFO] [stderr]       Adding block-modes v0.4.0 (available: v0.9.1)
[INFO] [stderr]       Adding generic-array v0.12.4 (available: v1.3.5)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding hkdf v0.7.1 (available: v0.12.4)
[INFO] [stderr]       Adding hmac v0.7.1 (available: v0.12.1)
[INFO] [stderr]       Adding rand_core v0.4.2 (available: v0.9.3)
[INFO] [stderr]       Adding rand_os v0.1.3 (available: v0.2.2)
[INFO] [stderr]       Adding sha2 v0.8.2 (available: v0.10.9)
[INFO] [stderr]       Adding x25519-dalek v0.5.2 (available: v2.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clear_on_drop v0.2.5
[INFO] [stderr]   Downloaded double-ratchet-signal-cbc-aes256-pkcs7-compact v0.1.1
[INFO] [stderr]   Downloaded hkdf v0.7.1
[INFO] [stderr]   Downloaded double-ratchet v0.1.0
[INFO] [stderr]   Downloaded block-modes v0.4.0
[INFO] [stderr]   Downloaded block-cipher v0.7.1
[INFO] [stderr]   Downloaded hmac v0.7.1
[INFO] [stderr]   Downloaded curve25519-dalek v1.2.6
[INFO] [stderr]   Downloaded x25519-dalek v0.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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_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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc401cc03b0976f362d68b8de982cdd0c04d2dcb3a102994dc1843d6fc0c7eaa
[INFO] running `Command { std: "docker" "start" "-a" "bc401cc03b0976f362d68b8de982cdd0c04d2dcb3a102994dc1843d6fc0c7eaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc401cc03b0976f362d68b8de982cdd0c04d2dcb3a102994dc1843d6fc0c7eaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc401cc03b0976f362d68b8de982cdd0c04d2dcb3a102994dc1843d6fc0c7eaa", kill_on_drop: false }`
[INFO] [stdout] bc401cc03b0976f362d68b8de982cdd0c04d2dcb3a102994dc1843d6fc0c7eaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b52e1ce350717a3c92e83ce1208c5f0da4de1a9f73052357298e87f962814bad
[INFO] running `Command { std: "docker" "start" "-a" "b52e1ce350717a3c92e83ce1208c5f0da4de1a9f73052357298e87f962814bad", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling cc v1.2.45
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking double-ratchet v0.1.0
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking hkdf v0.7.1
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking block-padding v0.3.3
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking block-cipher v0.7.1
[INFO] [stderr]     Checking block-modes v0.4.0
[INFO] [stderr]     Checking inout v0.1.4
[INFO] [stderr]     Checking aes-soft v0.6.4
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]    Compiling clear_on_drop v0.2.5
[INFO] [stderr]     Checking aes v0.6.0
[INFO] [stderr]     Checking cbc v0.1.2
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]    Compiling curve25519-dalek v1.2.6
[INFO] [stderr]     Checking double-ratchet-signal-cbc-aes256-pkcs7-compact v0.1.1
[INFO] [stderr]     Checking x25519-dalek v0.5.2
[INFO] [stderr]     Checking double-ratchet-signal v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/signal.rs:275:24
[INFO] [stdout]     |
[INFO] [stdout] 275 |           sk.0.as_slice()
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 276 | |             .clone()
[INFO] [stdout]     | |____________________^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/signal.rs:275:24
[INFO] [stdout]     |
[INFO] [stdout] 275 |           sk.0.as_slice()
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 276 | |             .clone()
[INFO] [stdout]     | |____________________^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.61s
[INFO] running `Command { std: "docker" "inspect" "b52e1ce350717a3c92e83ce1208c5f0da4de1a9f73052357298e87f962814bad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b52e1ce350717a3c92e83ce1208c5f0da4de1a9f73052357298e87f962814bad", kill_on_drop: false }`
[INFO] [stdout] b52e1ce350717a3c92e83ce1208c5f0da4de1a9f73052357298e87f962814bad