[INFO] cloning repository https://github.com/perlindgren/fastmem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/perlindgren/fastmem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Ffastmem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Ffastmem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c578c9d796cfb294fad05f2ed02aedd64ee1ad44
[INFO] building perlindgren/fastmem against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Ffastmem" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/perlindgren/fastmem
[INFO] finished tweaking git repo https://github.com/perlindgren/fastmem
[INFO] tweaked toml for git repo https://github.com/perlindgren/fastmem written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/perlindgren/fastmem on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/perlindgren/fastmem 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2d163fd9dd385710c3bd10df32946097191ad6303a2c538d2f438801522c721
[INFO] running `Command { std: "docker" "start" "-a" "f2d163fd9dd385710c3bd10df32946097191ad6303a2c538d2f438801522c721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2d163fd9dd385710c3bd10df32946097191ad6303a2c538d2f438801522c721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2d163fd9dd385710c3bd10df32946097191ad6303a2c538d2f438801522c721", kill_on_drop: false }`
[INFO] [stdout] f2d163fd9dd385710c3bd10df32946097191ad6303a2c538d2f438801522c721
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce31b963003138443eba10b0cffe61982143d90db01a38d3f9bae6e31d608d19
[INFO] running `Command { std: "docker" "start" "-a" "ce31b963003138443eba10b0cffe61982143d90db01a38d3f9bae6e31d608d19", kill_on_drop: false }`
[INFO] [stderr]    Compiling fastmem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `RacyCell` is never constructed
[INFO] [stdout]  --> src/heap.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct RacyCell<T>(UnsafeCell<T>);
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get_mut`, and `get` are never used
[INFO] [stdout]   --> src/heap.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T> RacyCell<T> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout]  9 |     #[inline(always)]
[INFO] [stdout] 10 |     pub const fn new(value: T) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub unsafe fn get_mut(&self) -> *mut T {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub unsafe fn get(&self) -> *const T {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "ce31b963003138443eba10b0cffe61982143d90db01a38d3f9bae6e31d608d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce31b963003138443eba10b0cffe61982143d90db01a38d3f9bae6e31d608d19", kill_on_drop: false }`
[INFO] [stdout] ce31b963003138443eba10b0cffe61982143d90db01a38d3f9bae6e31d608d19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f38cbdca4e3c3455ac07ae4b3bf08372c315f0bf5890cef207298e017cc1c711
[INFO] running `Command { std: "docker" "start" "-a" "f38cbdca4e3c3455ac07ae4b3bf08372c315f0bf5890cef207298e017cc1c711", kill_on_drop: false }`
[INFO] [stdout] warning: struct `RacyCell` is never constructed
[INFO] [stdout]  --> src/heap.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct RacyCell<T>(UnsafeCell<T>);
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get_mut`, and `get` are never used
[INFO] [stdout]   --> src/heap.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T> RacyCell<T> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout]  9 |     #[inline(always)]
[INFO] [stdout] 10 |     pub const fn new(value: T) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub unsafe fn get_mut(&self) -> *mut T {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub unsafe fn get(&self) -> *const T {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fastmem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::mem::size_of_val`
[INFO] [stdout]   --> src/lib.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     use core::mem::size_of_val;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_mut` and `get` are never used
[INFO] [stdout]   --> src/heap.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T> RacyCell<T> {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub unsafe fn get_mut(&self) -> *mut T {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub unsafe fn get(&self) -> *const T {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "f38cbdca4e3c3455ac07ae4b3bf08372c315f0bf5890cef207298e017cc1c711", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f38cbdca4e3c3455ac07ae4b3bf08372c315f0bf5890cef207298e017cc1c711", kill_on_drop: false }`
[INFO] [stdout] f38cbdca4e3c3455ac07ae4b3bf08372c315f0bf5890cef207298e017cc1c711
