[INFO] fetching crate memory_slice 0.1.0-preview3...
[INFO] checking memory_slice-0.1.0-preview3 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate memory_slice 0.1.0-preview3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate memory_slice 0.1.0-preview3 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate memory_slice 0.1.0-preview3
[INFO] finished tweaking crates.io crate memory_slice 0.1.0-preview3
[INFO] tweaked toml for crates.io crate memory_slice 0.1.0-preview3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", 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] f2e463252fc381d76ab0739db19690514eb530a8a690c85834166428a93cd57d
[INFO] running `Command { std: "docker" "start" "-a" "f2e463252fc381d76ab0739db19690514eb530a8a690c85834166428a93cd57d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2e463252fc381d76ab0739db19690514eb530a8a690c85834166428a93cd57d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2e463252fc381d76ab0739db19690514eb530a8a690c85834166428a93cd57d", kill_on_drop: false }`
[INFO] [stdout] f2e463252fc381d76ab0739db19690514eb530a8a690c85834166428a93cd57d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9021ed0dd821d46da54f6fa7b0dfb2699d84d7e8d01392b13e752a1dfb701f4
[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" "d9021ed0dd821d46da54f6fa7b0dfb2699d84d7e8d01392b13e752a1dfb701f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking galvanic-assert v0.8.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rstest v0.6.4
[INFO] [stderr]    Compiling contracts v0.6.1
[INFO] [stderr]     Checking memory_slice v0.1.0-preview3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:220:20
[INFO] [stdout]     |
[INFO] [stdout] 220 |     #[test_ensures(unsafe{ret.0.as_ptr().add(mid)} == ret.1.as_ptr())]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 220 |     #[test_ensures("{}", unsafe{ret.0.as_ptr().add(mid)} == ret.1.as_ptr())]
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:230:20
[INFO] [stdout]     |
[INFO] [stdout] 230 |     #[test_ensures(unsafe{ret.0.as_ptr().add(mid)} == ret.1.as_ptr())]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 230 |     #[test_ensures("{}", unsafe{ret.0.as_ptr().add(mid)} == ret.1.as_ptr())]
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:239:20
[INFO] [stdout]     |
[INFO] [stdout] 239 |       #[test_ensures(unsafe{*(&self.inner as *const [Underlying] as *const[u8]) 
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 240 | |         == *(&other.inner as *const [Underlying] as *const[u8])})]
[INFO] [stdout]     | |________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 239 |     #[test_ensures("{}", unsafe{*(&self.inner as *const [Underlying] as *const[u8]) 
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:322:20
[INFO] [stdout]     |
[INFO] [stdout] 322 |     #[test_ensures(unsafe{ret.0.as_ptr().add(ret.0.len())} == ret.1.as_ptr())]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 322 |     #[test_ensures("{}", unsafe{ret.0.as_ptr().add(ret.0.len())} == ret.1.as_ptr())]
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:323:20
[INFO] [stdout]     |
[INFO] [stdout] 323 |     #[test_ensures(unsafe{ret.1.as_ptr().add(ret.1.len())} == ret.2.as_ptr())]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 323 |     #[test_ensures("{}", unsafe{ret.1.as_ptr().add(ret.1.len())} == ret.2.as_ptr())]
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:372:20
[INFO] [stdout]     |
[INFO] [stdout] 372 |     #[test_ensures(unsafe{ret.0.as_ptr().add(ret.0.len())} == ret.1.as_ptr())]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 372 |     #[test_ensures("{}", unsafe{ret.0.as_ptr().add(ret.0.len())} == ret.1.as_ptr())]
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:373:20
[INFO] [stdout]     |
[INFO] [stdout] 373 |     #[test_ensures(unsafe{ret.1.as_ptr().add(ret.1.len())} == ret.2.as_ptr())]
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 373 |     #[test_ensures("{}", unsafe{ret.1.as_ptr().add(ret.1.len())} == ret.2.as_ptr())]
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.70s
[INFO] running `Command { std: "docker" "inspect" "d9021ed0dd821d46da54f6fa7b0dfb2699d84d7e8d01392b13e752a1dfb701f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9021ed0dd821d46da54f6fa7b0dfb2699d84d7e8d01392b13e752a1dfb701f4", kill_on_drop: false }`
[INFO] [stdout] d9021ed0dd821d46da54f6fa7b0dfb2699d84d7e8d01392b13e752a1dfb701f4