[INFO] fetching crate second-stack 0.2.1...
[INFO] checking second-stack-0.2.1 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate second-stack 0.2.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate second-stack 0.2.1 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate second-stack 0.2.1
[INFO] finished tweaking crates.io crate second-stack 0.2.1
[INFO] tweaked toml for crates.io crate second-stack 0.2.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a9aa6dac8565465e4ef8fe4f2625324b9136b952d630b2eb4edaf7ec8f433b9
[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" "2a9aa6dac8565465e4ef8fe4f2625324b9136b952d630b2eb4edaf7ec8f433b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a9aa6dac8565465e4ef8fe4f2625324b9136b952d630b2eb4edaf7ec8f433b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a9aa6dac8565465e4ef8fe4f2625324b9136b952d630b2eb4edaf7ec8f433b9", kill_on_drop: false }`
[INFO] [stdout] 2a9aa6dac8565465e4ef8fe4f2625324b9136b952d630b2eb4edaf7ec8f433b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3039c77f67107356f07e976939ec8d09874f5cdefd0e90baab07ccbc181502a0
[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" "3039c77f67107356f07e976939ec8d09874f5cdefd0e90baab07ccbc181502a0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.20
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.8.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]     Checking testdrop v0.1.2
[INFO] [stderr]     Checking second-stack v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:110:17
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 bottom,
[INFO] [stdout]     |                 ^^^^^^ expected `u8`, found slice `[u8]`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected raw pointer `*mut u8`
[INFO] [stdout]                found raw pointer `*mut [u8]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:111:26
[INFO] [stdout]     |
[INFO] [stdout] 111 |                 current: bottom,
[INFO] [stdout]     |                          ^^^^^^ expected `u8`, found slice `[u8]`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected raw pointer `*mut u8`
[INFO] [stdout]                found raw pointer `*mut [u8]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
[INFO] [stdout]    --> src/lib.rs:112:29
[INFO] [stdout]     |
[INFO] [stdout] 112 |                 top: bottom.add(layout.size()),
[INFO] [stdout]     |                             ^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `std::marker::Sized` is not implemented for `[u8]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:112:22
[INFO] [stdout]     |
[INFO] [stdout] 112 |                 top: bottom.add(layout.size()),
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ expected `u8`, found slice `[u8]`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected raw pointer `*mut u8`
[INFO] [stdout]                found raw pointer `*mut [u8]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `second-stack`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3039c77f67107356f07e976939ec8d09874f5cdefd0e90baab07ccbc181502a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3039c77f67107356f07e976939ec8d09874f5cdefd0e90baab07ccbc181502a0", kill_on_drop: false }`
[INFO] [stdout] 3039c77f67107356f07e976939ec8d09874f5cdefd0e90baab07ccbc181502a0