[INFO] fetching crate memac 0.5.3...
[INFO] checking memac-0.5.3 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate memac 0.5.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate memac 0.5.3 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate memac 0.5.3
[INFO] finished tweaking crates.io crate memac 0.5.3
[INFO] tweaked toml for crates.io crate memac 0.5.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 52 packages to latest compatible versions
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (latest: v0.50.0)
[INFO] [stderr]       Adding regex-automata v0.1.10 (latest: v0.4.6)
[INFO] [stderr]       Adding regex-syntax v0.6.29 (latest: v0.8.3)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows v0.54.0 (latest: v0.56.0)
[INFO] [stderr]       Adding windows-core v0.54.0 (latest: v0.56.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded synctools v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 502777d4aae7540cda10ce4f15032f15289c92ef4b6ff3cd4f514a575bb7a98d
[INFO] running `Command { std: "docker" "start" "-a" "502777d4aae7540cda10ce4f15032f15289c92ef4b6ff3cd4f514a575bb7a98d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "502777d4aae7540cda10ce4f15032f15289c92ef4b6ff3cd4f514a575bb7a98d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "502777d4aae7540cda10ce4f15032f15289c92ef4b6ff3cd4f514a575bb7a98d", kill_on_drop: false }`
[INFO] [stdout] 502777d4aae7540cda10ce4f15032f15289c92ef4b6ff3cd4f514a575bb7a98d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06a1756dc5f0c071163c2337466c78678d2c16fe6c47f9d582dfe4d01ae1fb47
[INFO] running `Command { std: "docker" "start" "-a" "06a1756dc5f0c071163c2337466c78678d2c16fe6c47f9d582dfe4d01ae1fb47", kill_on_drop: false }`
[INFO] [stderr]     Checking synctools v0.3.3
[INFO] [stderr]     Checking getrandom v0.2.14
[INFO] [stderr]     Checking memac v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stdout] error: casting references to a bigger memory layout than the backing allocation is undefined behavior, even if the reference is unused
[INFO] [stdout]    --> src/slab.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 466 |                 let ptr = &mut (self.buf[idx]) as *mut u8;
[INFO] [stdout]     |                                --------------- backing allocation comes from here
[INFO] [stdout] 467 |                 let ptr64 = ptr as *mut usize;
[INFO] [stdout]     |                             ----------------- casting happend here
[INFO] [stdout] ...
[INFO] [stdout] 471 |                     *ptr64 = self as *mut $id as usize;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 549 | SlabSmall!(Slab16, 64, 4, 0, 0xFFFFFFFF | (0b11 << 32), 16);
[INFO] [stdout]     | ----------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: casting from `u8` (1 bytes) to `usize` (8 bytes)
[INFO] [stdout]     = note: `#[deny(invalid_reference_casting)]` on by default
[INFO] [stdout]     = note: this error originates in the macro `SlabSmall` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casting references to a bigger memory layout than the backing allocation is undefined behavior, even if the reference is unused
[INFO] [stdout]    --> src/slab.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 466 |                 let ptr = &mut (self.buf[idx]) as *mut u8;
[INFO] [stdout]     |                                --------------- backing allocation comes from here
[INFO] [stdout] 467 |                 let ptr64 = ptr as *mut usize;
[INFO] [stdout]     |                             ----------------- casting happend here
[INFO] [stdout] ...
[INFO] [stdout] 471 |                     *ptr64 = self as *mut $id as usize;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 554 | SlabSmall!(Slab32, 32, 5, 0xFFFFFFFF, 0b111111111, 32);
[INFO] [stdout]     | ------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: casting from `u8` (1 bytes) to `usize` (8 bytes)
[INFO] [stdout]     = note: this error originates in the macro `SlabSmall` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casting references to a bigger memory layout than the backing allocation is undefined behavior, even if the reference is unused
[INFO] [stdout]    --> src/slab.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 466 |                 let ptr = &mut (self.buf[idx]) as *mut u8;
[INFO] [stdout]     |                                --------------- backing allocation comes from here
[INFO] [stdout] 467 |                 let ptr64 = ptr as *mut usize;
[INFO] [stdout]     |                             ----------------- casting happend here
[INFO] [stdout] ...
[INFO] [stdout] 471 |                     *ptr64 = self as *mut $id as usize;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 559 | SlabSmall!(Slab64, 16, 6, 0xFFFFFFFFFFFF, 0b111, 64);
[INFO] [stdout]     | ---------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: casting from `u8` (1 bytes) to `usize` (8 bytes)
[INFO] [stdout]     = note: this error originates in the macro `SlabSmall` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casting references to a bigger memory layout than the backing allocation is undefined behavior, even if the reference is unused
[INFO] [stdout]    --> src/slab.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 466 |                 let ptr = &mut (self.buf[idx]) as *mut u8;
[INFO] [stdout]     |                                --------------- backing allocation comes from here
[INFO] [stdout] 467 |                 let ptr64 = ptr as *mut usize;
[INFO] [stdout]     |                             ----------------- casting happend here
[INFO] [stdout] ...
[INFO] [stdout] 471 |                     *ptr64 = self as *mut $id as usize;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 564 | SlabSmall!(Slab128, 8, 7, 0xFFFFFFFFFFFFFF, 1, 128);
[INFO] [stdout]     | --------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: casting from `u8` (1 bytes) to `usize` (8 bytes)
[INFO] [stdout]     = note: this error originates in the macro `SlabSmall` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casting references to a bigger memory layout than the backing allocation is undefined behavior, even if the reference is unused
[INFO] [stdout]    --> src/slab.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 466 |                 let ptr = &mut (self.buf[idx]) as *mut u8;
[INFO] [stdout]     |                                --------------- backing allocation comes from here
[INFO] [stdout] 467 |                 let ptr64 = ptr as *mut usize;
[INFO] [stdout]     |                             ----------------- casting happend here
[INFO] [stdout] ...
[INFO] [stdout] 471 |                     *ptr64 = self as *mut $id as usize;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 569 | SlabSmall!(Slab256, 4, 8, 0xFFFFFFFFFFFFFFF, 1, 256);
[INFO] [stdout]     | ---------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: casting from `u8` (1 bytes) to `usize` (8 bytes)
[INFO] [stdout]     = note: this error originates in the macro `SlabSmall` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casting references to a bigger memory layout than the backing allocation is undefined behavior, even if the reference is unused
[INFO] [stdout]    --> src/slab.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 466 |                 let ptr = &mut (self.buf[idx]) as *mut u8;
[INFO] [stdout]     |                                --------------- backing allocation comes from here
[INFO] [stdout] 467 |                 let ptr64 = ptr as *mut usize;
[INFO] [stdout]     |                             ----------------- casting happend here
[INFO] [stdout] ...
[INFO] [stdout] 471 |                     *ptr64 = self as *mut $id as usize;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 574 | SlabSmall!(Slab512, 2, 9, 0x3FFFFFFFFFFFFFFF, 1, 512);
[INFO] [stdout]     | ----------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: casting from `u8` (1 bytes) to `usize` (8 bytes)
[INFO] [stdout]     = note: this error originates in the macro `SlabSmall` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casting references to a bigger memory layout than the backing allocation is undefined behavior, even if the reference is unused
[INFO] [stdout]    --> src/slab.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 466 |                 let ptr = &mut (self.buf[idx]) as *mut u8;
[INFO] [stdout]     |                                --------------- backing allocation comes from here
[INFO] [stdout] 467 |                 let ptr64 = ptr as *mut usize;
[INFO] [stdout]     |                             ----------------- casting happend here
[INFO] [stdout] ...
[INFO] [stdout] 471 |                     *ptr64 = self as *mut $id as usize;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 579 | SlabSmall!(Slab1024, 1, 10, 0x7FFFFFFFFFFFFFFF, 1, 1024);
[INFO] [stdout]     | -------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: casting from `u8` (1 bytes) to `usize` (8 bytes)
[INFO] [stdout]     = note: this error originates in the macro `SlabSmall` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casting references to a bigger memory layout than the backing allocation is undefined behavior, even if the reference is unused
[INFO] [stdout]    --> src/slab.rs:748:13
[INFO] [stdout]     |
[INFO] [stdout] 743 |         let ptr = &mut (self.buf[0]) as *mut u8;
[INFO] [stdout]     |                        ------------- backing allocation comes from here
[INFO] [stdout] 744 |         let ptr64 = ptr as *mut usize;
[INFO] [stdout]     |                     ----------------- casting happend here
[INFO] [stdout] ...
[INFO] [stdout] 748 |             *ptr64 = self as *mut Slab65512 as usize;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: casting from `u8` (1 bytes) to `usize` (8 bytes)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `memac` (lib) due to 9 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "06a1756dc5f0c071163c2337466c78678d2c16fe6c47f9d582dfe4d01ae1fb47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06a1756dc5f0c071163c2337466c78678d2c16fe6c47f9d582dfe4d01ae1fb47", kill_on_drop: false }`
[INFO] [stdout] 06a1756dc5f0c071163c2337466c78678d2c16fe6c47f9d582dfe4d01ae1fb47
