[INFO] fetching crate lrs 0.1.1...
[INFO] testing lrs-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate lrs 0.1.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lrs 0.1.1 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 lrs 0.1.1
[INFO] finished tweaking crates.io crate lrs 0.1.1
[INFO] tweaked toml for crates.io crate lrs 0.1.1 written to /workspace/builds/worker-6/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b500ced186214aa8dc8c9ff333ca33f36b0b4e69b2a0bc770ee54fab4c9cff68
[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" "b500ced186214aa8dc8c9ff333ca33f36b0b4e69b2a0bc770ee54fab4c9cff68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b500ced186214aa8dc8c9ff333ca33f36b0b4e69b2a0bc770ee54fab4c9cff68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b500ced186214aa8dc8c9ff333ca33f36b0b4e69b2a0bc770ee54fab4c9cff68", kill_on_drop: false }`
[INFO] [stdout] b500ced186214aa8dc8c9ff333ca33f36b0b4e69b2a0bc770ee54fab4c9cff68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9122063f822efa8c7974999ebb8405e526acc21bccbaccd00d6ea2e05cc652e
[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" "e9122063f822efa8c7974999ebb8405e526acc21bccbaccd00d6ea2e05cc652e", kill_on_drop: false }`
[INFO] [stderr]    Compiling lrs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/clause.rs:50:18
[INFO] [stdout]    |
[INFO] [stdout] 50 |             Some(t) => {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "e9122063f822efa8c7974999ebb8405e526acc21bccbaccd00d6ea2e05cc652e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9122063f822efa8c7974999ebb8405e526acc21bccbaccd00d6ea2e05cc652e", kill_on_drop: false }`
[INFO] [stdout] e9122063f822efa8c7974999ebb8405e526acc21bccbaccd00d6ea2e05cc652e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76bc64f49b1a0b9e0ec622d305e1ebbe7768cfa19c8285b37681c7ccb5d4327f
[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" "76bc64f49b1a0b9e0ec622d305e1ebbe7768cfa19c8285b37681c7ccb5d4327f", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/clause.rs:50:18
[INFO] [stdout]    |
[INFO] [stdout] 50 |             Some(t) => {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lrs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/clause.rs:50:18
[INFO] [stdout]    |
[INFO] [stdout] 50 |             Some(t) => {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.33s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "76bc64f49b1a0b9e0ec622d305e1ebbe7768cfa19c8285b37681c7ccb5d4327f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76bc64f49b1a0b9e0ec622d305e1ebbe7768cfa19c8285b37681c7ccb5d4327f", kill_on_drop: false }`
[INFO] [stdout] 76bc64f49b1a0b9e0ec622d305e1ebbe7768cfa19c8285b37681c7ccb5d4327f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fd2e826a2f0a3a486ceca3ba68bda1d067743aeb9a2e3c0044a211699a72e87d
[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" "fd2e826a2f0a3a486ceca3ba68bda1d067743aeb9a2e3c0044a211699a72e87d", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/clause.rs:50:18
[INFO] [stderr]    |
[INFO] [stderr] 50 |             Some(t) => {
[INFO] [stderr]    |                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/clause.rs:50:18
[INFO] [stderr]    |
[INFO] [stderr] 50 |             Some(t) => {
[INFO] [stderr]    |                  ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lrs-7208a548aaafa581
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::tests::lrs_symbol_create ... ok
[INFO] [stdout] test tests::tests::lrs_term_create ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lib-726eb65fb93450c2
[INFO] [stdout] test tests::tests::lrs_term_remove ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lrs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fd2e826a2f0a3a486ceca3ba68bda1d067743aeb9a2e3c0044a211699a72e87d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd2e826a2f0a3a486ceca3ba68bda1d067743aeb9a2e3c0044a211699a72e87d", kill_on_drop: false }`
[INFO] [stdout] fd2e826a2f0a3a486ceca3ba68bda1d067743aeb9a2e3c0044a211699a72e87d