[INFO] fetching crate protocol 3.1.7...
[INFO] checking protocol-3.1.7 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate protocol 3.1.7 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate protocol 3.1.7 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate protocol 3.1.7
[INFO] removed 6 missing examples
[INFO] finished tweaking crates.io crate protocol 3.1.7
[INFO] tweaked toml for crates.io crate protocol 3.1.7 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate protocol 3.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8ea61d0ced4aab8bc1ad6d6519e32c051d21c51d905f25ff358f147d7333c1b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a8ea61d0ced4aab8bc1ad6d6519e32c051d21c51d905f25ff358f147d7333c1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8ea61d0ced4aab8bc1ad6d6519e32c051d21c51d905f25ff358f147d7333c1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8ea61d0ced4aab8bc1ad6d6519e32c051d21c51d905f25ff358f147d7333c1b", kill_on_drop: false }`
[INFO] [stdout] a8ea61d0ced4aab8bc1ad6d6519e32c051d21c51d905f25ff358f147d7333c1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 48bfa88e18fd014bf232d12716a107c37e063eb85ca23b72de28324b22f846ac
[INFO] running `Command { std: "docker" "start" "-a" "48bfa88e18fd014bf232d12716a107c37e063eb85ca23b72de28324b22f846ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking miniz_oxide v0.4.0
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]    Compiling protocol-derive v3.1.7
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking flate2 v1.0.16
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking protocol v3.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:41:20
[INFO] [stdout]    |
[INFO] [stdout] 41 |         assert_eq!(RotateBytes::ROT13.encode_data(vec![0, 1, 2, 3, 4]).unwrap(),
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(const_item_mutation)]` on by default
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |         assert_eq!(RotateBytes::ROT13.decode_data(vec![13, 14, 15, 16, 17]).unwrap(),
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |         assert_eq!(RotateBytes::ROT13.encode_data(RotateBytes::ROT13.decode_data(vec![2, 4, 8, 32, 254]).unwrap()).unwrap(),
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:53:51
[INFO] [stdout]    |
[INFO] [stdout] 53 |         assert_eq!(RotateBytes::ROT13.encode_data(RotateBytes::ROT13.decode_data(vec![2, 4, 8, 32, 254]).unwrap()).unwrap(),
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]    = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]   --> src/wire/middleware/rotate_bytes.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub const ROT13: RotateBytes = RotateBytes { amount: 13 };
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.78s
[INFO] running `Command { std: "docker" "inspect" "48bfa88e18fd014bf232d12716a107c37e063eb85ca23b72de28324b22f846ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48bfa88e18fd014bf232d12716a107c37e063eb85ca23b72de28324b22f846ac", kill_on_drop: false }`
[INFO] [stdout] 48bfa88e18fd014bf232d12716a107c37e063eb85ca23b72de28324b22f846ac