[INFO] fetching crate dcap-provider 0.3.1...
[INFO] checking dcap-provider-0.3.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate dcap-provider 0.3.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate dcap-provider 0.3.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dcap-provider 0.3.1
[INFO] finished tweaking crates.io crate dcap-provider 0.3.1
[INFO] tweaked toml for crates.io crate dcap-provider 0.3.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 218 packages
[INFO] [stderr]       Adding autocfg v0.1.8 (latest: v1.2.0)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ipc-queue v0.2.0
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[INFO] [stderr]   Downloaded nix v0.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95548259ff6cdc7ef9ef99b70ef3b72b75a461a2c9497eff8c6090032649f1bc
[INFO] running `Command { std: "docker" "start" "-a" "95548259ff6cdc7ef9ef99b70ef3b72b75a461a2c9497eff8c6090032649f1bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95548259ff6cdc7ef9ef99b70ef3b72b75a461a2c9497eff8c6090032649f1bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95548259ff6cdc7ef9ef99b70ef3b72b75a461a2c9497eff8c6090032649f1bc", kill_on_drop: false }`
[INFO] [stdout] 95548259ff6cdc7ef9ef99b70ef3b72b75a461a2c9497eff8c6090032649f1bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa0132176116bb4e92c6881f2e8099af2037dabc49b9b53bb466903b7bf603a9
[INFO] running `Command { std: "docker" "start" "-a" "fa0132176116bb4e92c6881f2e8099af2037dabc49b9b53bb466903b7bf603a9", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking sgx-isa v0.4.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking futures-channel v0.3.30
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[INFO] [stderr]    Compiling dcap-ql-sys v0.2.1
[INFO] [stderr]     Checking ipc-queue v0.2.0
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[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
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[INFO] [stderr]     Checking regex-automata v0.4.6
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[INFO] [stderr]     Checking sgxs-loaders v0.3.3
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking dcap-ql v0.3.7
[INFO] [stderr]     Checking report-test v0.3.3
[INFO] [stderr]     Checking dcap-provider v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:371:9
[INFO] [stdout]     |
[INFO] [stdout] 371 |         Box::from_raw(slice::from_raw_parts_mut(p_cert_config as *mut u8, buflen));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 371 |         let _ = Box::from_raw(slice::from_raw_parts_mut(p_cert_config as *mut u8, buflen));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:371:9
[INFO] [stdout]     |
[INFO] [stdout] 371 |         Box::from_raw(slice::from_raw_parts_mut(p_cert_config as *mut u8, buflen));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 371 |         let _ = Box::from_raw(slice::from_raw_parts_mut(p_cert_config as *mut u8, buflen));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.09s
[INFO] running `Command { std: "docker" "inspect" "fa0132176116bb4e92c6881f2e8099af2037dabc49b9b53bb466903b7bf603a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa0132176116bb4e92c6881f2e8099af2037dabc49b9b53bb466903b7bf603a9", kill_on_drop: false }`
[INFO] [stdout] fa0132176116bb4e92c6881f2e8099af2037dabc49b9b53bb466903b7bf603a9