[INFO] fetching crate orc 0.0.1...
[INFO] testing orc-0.0.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate orc 0.0.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate orc 0.0.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate orc 0.0.1
[INFO] finished tweaking crates.io crate orc 0.0.1
[INFO] tweaked toml for crates.io crate orc 0.0.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 212da8c81813429c8b088116bad11e9c9936e4147733b448fb7691160d5b984f
[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" "212da8c81813429c8b088116bad11e9c9936e4147733b448fb7691160d5b984f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "212da8c81813429c8b088116bad11e9c9936e4147733b448fb7691160d5b984f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "212da8c81813429c8b088116bad11e9c9936e4147733b448fb7691160d5b984f", kill_on_drop: false }`
[INFO] [stdout] 212da8c81813429c8b088116bad11e9c9936e4147733b448fb7691160d5b984f
[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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] e56f83b4072a1e2c1f15d3e860adfdb3bd1d800ca2c98873ad6b2bab42413cea
[INFO] running `Command { std: "docker" "start" "-a" "e56f83b4072a1e2c1f15d3e860adfdb3bd1d800ca2c98873ad6b2bab42413cea", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling orc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `position` is never read
[INFO] [stdout]    --> src/lib.rs:152:17
[INFO] [stdout]     |
[INFO] [stdout] 152 |                 position = 0;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e56f83b4072a1e2c1f15d3e860adfdb3bd1d800ca2c98873ad6b2bab42413cea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e56f83b4072a1e2c1f15d3e860adfdb3bd1d800ca2c98873ad6b2bab42413cea", kill_on_drop: false }`
[INFO] [stdout] e56f83b4072a1e2c1f15d3e860adfdb3bd1d800ca2c98873ad6b2bab42413cea
[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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df7e8477770be6bf857a83cd7328318079e7dbd9be1cec4f603c46d9a3c9e959
[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" "df7e8477770be6bf857a83cd7328318079e7dbd9be1cec4f603c46d9a3c9e959", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling orc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `position` is never read
[INFO] [stdout]    --> src/lib.rs:152:17
[INFO] [stdout]     |
[INFO] [stdout] 152 |                 position = 0;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `position` is never read
[INFO] [stdout]    --> src/lib.rs:152:17
[INFO] [stdout]     |
[INFO] [stdout] 152 |                 position = 0;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `Command { std: "docker" "inspect" "df7e8477770be6bf857a83cd7328318079e7dbd9be1cec4f603c46d9a3c9e959", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df7e8477770be6bf857a83cd7328318079e7dbd9be1cec4f603c46d9a3c9e959", kill_on_drop: false }`
[INFO] [stdout] df7e8477770be6bf857a83cd7328318079e7dbd9be1cec4f603c46d9a3c9e959
[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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dc1b41fbd06429919774edc3deec343681c855167eeaa5a4562388510f9ba049
[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" "dc1b41fbd06429919774edc3deec343681c855167eeaa5a4562388510f9ba049", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `position` is never read
[INFO] [stderr]    --> src/lib.rs:152:17
[INFO] [stderr]     |
[INFO] [stderr] 152 |                 position = 0;
[INFO] [stderr]     |                 ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `position` is never read
[INFO] [stderr]    --> src/lib.rs:152:17
[INFO] [stderr]     |
[INFO] [stderr] 152 |                 position = 0;
[INFO] [stderr]     |                 ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/orc-7e205301850e197c
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_drop::test_drop ... ok
[INFO] [stdout] test test_two_two_the ... ok
[INFO] [stdout] test test_drop::test_heap_freed ... ok
[INFO] [stdout] test test_concurrency::test_concurrency ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests orc
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - OrcHeap<T>::new (line 94) ... ok
[INFO] [stdout] test src/lib.rs - OrcHeap<T>::with_capacity (line 105) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dc1b41fbd06429919774edc3deec343681c855167eeaa5a4562388510f9ba049", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc1b41fbd06429919774edc3deec343681c855167eeaa5a4562388510f9ba049", kill_on_drop: false }`
[INFO] [stdout] dc1b41fbd06429919774edc3deec343681c855167eeaa5a4562388510f9ba049