[INFO] fetching crate magnetic 2.2.0...
[INFO] testing magnetic-2.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate magnetic 2.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate magnetic 2.2.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate magnetic 2.2.0
[INFO] finished tweaking crates.io crate magnetic 2.2.0
[INFO] tweaked toml for crates.io crate magnetic 2.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86e212ddde91ddd556f1e09a07c6e4dcf670f7b8a3be21dd4e0a37f0f5078586
[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" "86e212ddde91ddd556f1e09a07c6e4dcf670f7b8a3be21dd4e0a37f0f5078586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86e212ddde91ddd556f1e09a07c6e4dcf670f7b8a3be21dd4e0a37f0f5078586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86e212ddde91ddd556f1e09a07c6e4dcf670f7b8a3be21dd4e0a37f0f5078586", kill_on_drop: false }`
[INFO] [stdout] 86e212ddde91ddd556f1e09a07c6e4dcf670f7b8a3be21dd4e0a37f0f5078586
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cd11d28c7eba3822ca6744cd63a919b049ab86b658aa5ea61254cbaaaa1ccb9
[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" "5cd11d28c7eba3822ca6744cd63a919b049ab86b658aa5ea61254cbaaaa1ccb9", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling magnetic v2.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mpsc.rs:118:32
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/spmc.rs:157:35
[INFO] [stdout]     |
[INFO] [stdout] 157 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mpmc.rs:118:32
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mpmc.rs:163:35
[INFO] [stdout]     |
[INFO] [stdout] 163 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.82s
[INFO] running `Command { std: "docker" "inspect" "5cd11d28c7eba3822ca6744cd63a919b049ab86b658aa5ea61254cbaaaa1ccb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cd11d28c7eba3822ca6744cd63a919b049ab86b658aa5ea61254cbaaaa1ccb9", kill_on_drop: false }`
[INFO] [stdout] 5cd11d28c7eba3822ca6744cd63a919b049ab86b658aa5ea61254cbaaaa1ccb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--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] 4d757ef3338f6aa55e3edba0ac5228f9393587fb10c65b0ce2b79d7c1ab8bab4
[INFO] running `Command { std: "docker" "start" "-a" "4d757ef3338f6aa55e3edba0ac5228f9393587fb10c65b0ce2b79d7c1ab8bab4", kill_on_drop: false }`
[INFO] [stderr]    Compiling magnetic v2.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mpsc.rs:118:32
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/spmc.rs:157:35
[INFO] [stdout]     |
[INFO] [stdout] 157 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mpmc.rs:118:32
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mpmc.rs:163:35
[INFO] [stdout]     |
[INFO] [stdout] 163 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mpsc.rs:118:32
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/spmc.rs:157:35
[INFO] [stdout]     |
[INFO] [stdout] 157 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mpmc.rs:118:32
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/mpmc.rs:163:35
[INFO] [stdout]     |
[INFO] [stdout] 163 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.67s
[INFO] running `Command { std: "docker" "inspect" "4d757ef3338f6aa55e3edba0ac5228f9393587fb10c65b0ce2b79d7c1ab8bab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d757ef3338f6aa55e3edba0ac5228f9393587fb10c65b0ce2b79d7c1ab8bab4", kill_on_drop: false }`
[INFO] [stdout] 4d757ef3338f6aa55e3edba0ac5228f9393587fb10c65b0ce2b79d7c1ab8bab4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", 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] 13cd9798b26a9e3ce9aa981c19d2d63c18f518f516397e87b14b59b2f366429f
[INFO] running `Command { std: "docker" "start" "-a" "13cd9798b26a9e3ce9aa981c19d2d63c18f518f516397e87b14b59b2f366429f", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/mpsc.rs:118:32
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/spmc.rs:157:35
[INFO] [stderr]     |
[INFO] [stderr] 157 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/mpmc.rs:118:32
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/mpmc.rs:163:35
[INFO] [stderr]     |
[INFO] [stderr] 163 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/mpsc.rs:118:32
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/spmc.rs:157:35
[INFO] [stderr]     |
[INFO] [stderr] 157 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/mpmc.rs:118:32
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 if q.head.next.compare_and_swap(head, next, Ordering::Acquire) == head {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/mpmc.rs:163:35
[INFO] [stderr]     |
[INFO] [stderr] 163 |             } else if q.tail.next.compare_and_swap(tail, tail_plus_one, Ordering::Acquire) == tail {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/magnetic-80988656498c401d
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test buffer::dynamic::test::bad_buf ... ok
[INFO] [stdout] test mpmc::test::disconnect ... ok
[INFO] [stdout] test mpmc::test::one_thread ... ok
[INFO] [stdout] test mpmc::test::two_thread_seq ... ok
[INFO] [stdout] test mpsc::test::one_thread ... ok
[INFO] [stdout] test spmc::test::disconnect ... ok
[INFO] [stdout] test buffer::dynamic::test::p2_buf ... ok
[INFO] [stdout] test spmc::test::one_thread ... ok
[INFO] [stdout] test spsc::test::one_thread ... ok
[INFO] [stdout] test spsc::test::disconnect ... ok
[INFO] [stdout] test buffer::dynamic::test::dynamic_buf_p2 ... ok
[INFO] [stdout] test buffer::dynamic::test::dynamic_buf ... ok
[INFO] [stdout] test spmc::test::two_thread_seq ... ok
[INFO] [stdout] test mpsc::test::two_thread_seq ... ok
[INFO] [stdout] test mpsc::test::disconnect ... ok
[INFO] [stdout] test spsc::test::two_thread_seq ... ok
[INFO] [stdout] test mpmc::test::four_thread_par ... test mpmc::test::four_thread_par has been running for over 60 seconds
[INFO] [stdout] test mpsc::test::four_thread_par ... test mpsc::test::four_thread_par has been running for over 60 seconds
[INFO] [stdout] test spmc::test::four_thread_par ... test spmc::test::four_thread_par has been running for over 60 seconds
[INFO] [stdout] test spsc::test::two_thread_par ... test spsc::test::two_thread_par has been running for over 60 seconds
[INFO] [stdout] test spsc::test::two_thread_par ... ok
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "13cd9798b26a9e3ce9aa981c19d2d63c18f518f516397e87b14b59b2f366429f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13cd9798b26a9e3ce9aa981c19d2d63c18f518f516397e87b14b59b2f366429f", kill_on_drop: false }`
[INFO] [stdout] 13cd9798b26a9e3ce9aa981c19d2d63c18f518f516397e87b14b59b2f366429f