[INFO] fetching crate memkit 0.2.0-beta.1...
[INFO] testing memkit-0.2.0-beta.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate memkit 0.2.0-beta.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate memkit 0.2.0-beta.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate memkit 0.2.0-beta.1
[INFO] tweaked toml for crates.io crate memkit 0.2.0-beta.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate memkit 0.2.0-beta.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate memkit 0.2.0-beta.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a720f0a77b930c1cf9c47950a808e48fd8b23955ea845a753529e39d5278aafe
[INFO] running `Command { std: "docker" "start" "-a" "a720f0a77b930c1cf9c47950a808e48fd8b23955ea845a753529e39d5278aafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a720f0a77b930c1cf9c47950a808e48fd8b23955ea845a753529e39d5278aafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a720f0a77b930c1cf9c47950a808e48fd8b23955ea845a753529e39d5278aafe", kill_on_drop: false }`
[INFO] [stdout] a720f0a77b930c1cf9c47950a808e48fd8b23955ea845a753529e39d5278aafe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 349c37900fe01a8ce87d77278d2e9544e14aae8868e8769a19b6a1abfafcadba
[INFO] running `Command { std: "docker" "start" "-a" "349c37900fe01a8ce87d77278d2e9544e14aae8868e8769a19b6a1abfafcadba", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling memkit v0.2.0-beta.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `likely`
[INFO] [stdout]   --> src/core/arena_pool.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | use super::hints::{likely, unlikely};
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::fd::AsFd`
[INFO] [stdout]   --> src/core/huge_pages.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::os::fd::AsFd;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::alloc::Layout`
[INFO] [stdout]    --> src/core/huge_pages.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     use std::alloc::Layout;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]    --> src/core/huge_pages.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |             libc::mmap(
[INFO] [stdout]     |             ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]    --> src/core/huge_pages.rs:112:17
[INFO] [stdout]     |
[INFO] [stdout] 112 |                 libc::PROT_READ | libc::PROT_WRITE,
[INFO] [stdout]     |                 ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]    --> src/core/huge_pages.rs:112:35
[INFO] [stdout]     |
[INFO] [stdout] 112 |                 libc::PROT_READ | libc::PROT_WRITE,
[INFO] [stdout]     |                                   ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]    --> src/core/huge_pages.rs:113:17
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 libc::MAP_PRIVATE | libc::MAP_ANONYMOUS | libc::MAP_HUGETLB,
[INFO] [stdout]     |                 ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]    --> src/core/huge_pages.rs:113:37
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 libc::MAP_PRIVATE | libc::MAP_ANONYMOUS | libc::MAP_HUGETLB,
[INFO] [stdout]     |                                     ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]    --> src/core/huge_pages.rs:113:59
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 libc::MAP_PRIVATE | libc::MAP_ANONYMOUS | libc::MAP_HUGETLB,
[INFO] [stdout]     |                                                           ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `libc` in this scope
[INFO] [stdout]    --> src/core/huge_pages.rs:119:19
[INFO] [stdout]     |
[INFO] [stdout] 119 |         if ptr != libc::MAP_FAILED {
[INFO] [stdout]     |                   ^^^^ use of unresolved module or unlinked crate `libc`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `libc`, use `cargo add libc` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `memkit` (lib) due to 7 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "349c37900fe01a8ce87d77278d2e9544e14aae8868e8769a19b6a1abfafcadba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "349c37900fe01a8ce87d77278d2e9544e14aae8868e8769a19b6a1abfafcadba", kill_on_drop: false }`
[INFO] [stdout] 349c37900fe01a8ce87d77278d2e9544e14aae8868e8769a19b6a1abfafcadba