[INFO] cloning repository https://github.com/xd009642/traced-allocator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xd009642/traced-allocator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxd009642%2Ftraced-allocator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxd009642%2Ftraced-allocator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 896ed0409fa8faad472f46846014382f5e27bec7
[INFO] testing xd009642/traced-allocator against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxd009642%2Ftraced-allocator" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xd009642/traced-allocator on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xd009642/traced-allocator
[INFO] finished tweaking git repo https://github.com/xd009642/traced-allocator
[INFO] tweaked toml for git repo https://github.com/xd009642/traced-allocator written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/xd009642/traced-allocator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d72dd15a767ae5b93c391da5e42272b8012474b7806b385d6c043da554612b1b
[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" "d72dd15a767ae5b93c391da5e42272b8012474b7806b385d6c043da554612b1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d72dd15a767ae5b93c391da5e42272b8012474b7806b385d6c043da554612b1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d72dd15a767ae5b93c391da5e42272b8012474b7806b385d6c043da554612b1b", kill_on_drop: false }`
[INFO] [stdout] d72dd15a767ae5b93c391da5e42272b8012474b7806b385d6c043da554612b1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", 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] c12040d8d2b707e058057d228375360e97de3ede9d803ca7475ab49127294194
[INFO] running `Command { std: "docker" "start" "-a" "c12040d8d2b707e058057d228375360e97de3ede9d803ca7475ab49127294194", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling libc-print v0.1.13
[INFO] [stderr]    Compiling traced-allocator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: the `#[track_caller]` attribute is an experimental feature
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     #[track_caller]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #47809 <https://github.com/rust-lang/rust/issues/47809> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `#[track_caller]` attribute is an experimental feature
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     #[track_caller]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #47809 <https://github.com/rust-lang/rust/issues/47809> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `#[track_caller]` attribute is an experimental feature
[INFO] [stdout]   --> src/lib.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     #[track_caller]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #47809 <https://github.com/rust-lang/rust/issues/47809> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the `#[track_caller]` attribute is an experimental feature
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     #[track_caller]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #47809 <https://github.com/rust-lang/rust/issues/47809> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'track_caller': uses #[track_caller] which is not yet stable
[INFO] [stdout]   --> src/lib.rs:21:53
[INFO] [stdout]    |
[INFO] [stdout] 21 |         libc_println!("Alloc {:?} at {:?}", layout, Location::caller());
[INFO] [stdout]    |                                                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #47809 <https://github.com/rust-lang/rust/issues/47809> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'track_caller': uses #[track_caller] which is not yet stable
[INFO] [stdout]   --> src/lib.rs:27:55
[INFO] [stdout]    |
[INFO] [stdout] 27 |         libc_println!("Dealloc {:?} at {:?}", layout, Location::caller());
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #47809 <https://github.com/rust-lang/rust/issues/47809> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'track_caller': uses #[track_caller] which is not yet stable
[INFO] [stdout]   --> src/lib.rs:33:60
[INFO] [stdout]    |
[INFO] [stdout] 33 |         libc_println!("Alloc_zeroed {:?} at {:?}", layout, Location::caller());
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #47809 <https://github.com/rust-lang/rust/issues/47809> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'track_caller': uses #[track_caller] which is not yet stable
[INFO] [stdout]   --> src/lib.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             Location::caller()
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #47809 <https://github.com/rust-lang/rust/issues/47809> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `traced-allocator`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c12040d8d2b707e058057d228375360e97de3ede9d803ca7475ab49127294194", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c12040d8d2b707e058057d228375360e97de3ede9d803ca7475ab49127294194", kill_on_drop: false }`
[INFO] [stdout] c12040d8d2b707e058057d228375360e97de3ede9d803ca7475ab49127294194