[INFO] fetching crate mergle 0.5.0...
[INFO] testing mergle-0.5.0 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate mergle 0.5.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate mergle 0.5.0 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mergle 0.5.0
[INFO] finished tweaking crates.io crate mergle 0.5.0
[INFO] tweaked toml for crates.io crate mergle 0.5.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", 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] 53b7c41e3df97303609a1f52a929b3ab235682e5831a3c7f9dc6e95a40638fd2
[INFO] running `Command { std: "docker" "start" "-a" "53b7c41e3df97303609a1f52a929b3ab235682e5831a3c7f9dc6e95a40638fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53b7c41e3df97303609a1f52a929b3ab235682e5831a3c7f9dc6e95a40638fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53b7c41e3df97303609a1f52a929b3ab235682e5831a3c7f9dc6e95a40638fd2", kill_on_drop: false }`
[INFO] [stdout] 53b7c41e3df97303609a1f52a929b3ab235682e5831a3c7f9dc6e95a40638fd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c5dcd0fccd3e5573f16f938360c08004ff1ef07bda6dc238ffd4a9075e65851
[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" "6c5dcd0fccd3e5573f16f938360c08004ff1ef07bda6dc238ffd4a9075e65851", kill_on_drop: false }`
[INFO] [stderr]    Compiling seq-macro v0.2.2
[INFO] [stderr]    Compiling bromberg_sl2 v0.5.1
[INFO] [stderr]    Compiling mergle v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.90s
[INFO] running `Command { std: "docker" "inspect" "6c5dcd0fccd3e5573f16f938360c08004ff1ef07bda6dc238ffd4a9075e65851", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c5dcd0fccd3e5573f16f938360c08004ff1ef07bda6dc238ffd4a9075e65851", kill_on_drop: false }`
[INFO] [stdout] 6c5dcd0fccd3e5573f16f938360c08004ff1ef07bda6dc238ffd4a9075e65851
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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] 74fe37ee016691a043f35d78e2a3859123a09073e95180ee8b787b36b5242e25
[INFO] running `Command { std: "docker" "start" "-a" "74fe37ee016691a043f35d78e2a3859123a09073e95180ee8b787b36b5242e25", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling quickcheck v0.9.2
[INFO] [stderr]    Compiling mergle v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]    --> src/test.rs:127:42
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn test_pop(ops : Vec<MergleOp<U8>>, elem : U8) -> TestResult {
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[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 test [unoptimized + debuginfo] target(s) in 29.11s
[INFO] running `Command { std: "docker" "inspect" "74fe37ee016691a043f35d78e2a3859123a09073e95180ee8b787b36b5242e25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74fe37ee016691a043f35d78e2a3859123a09073e95180ee8b787b36b5242e25", kill_on_drop: false }`
[INFO] [stdout] 74fe37ee016691a043f35d78e2a3859123a09073e95180ee8b787b36b5242e25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 999c6f1e095cb3815652a473b0c727f56a1934aeb27f96fbe5f13c96d7024da3
[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" "999c6f1e095cb3815652a473b0c727f56a1934aeb27f96fbe5f13c96d7024da3", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `elem`
[INFO] [stdout] running 5 tests
[INFO] [stderr]    --> src/test.rs:127:42
[INFO] [stderr]     |
[INFO] [stderr] 127 |     fn test_pop(ops : Vec<MergleOp<U8>>, elem : U8) -> TestResult {
[INFO] [stderr]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mergle` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mergle-dfb19dc0b3831b26)
[INFO] [stdout] test test::ord_regression_2 ... ok
[INFO] [stdout] test test::ord_regression ... ok
[INFO] [stdout] test test::test_eq ... ok
[INFO] [stdout] test test::test_pop ... ok
[INFO] [stderr]    Doc-tests mergle
[INFO] [stdout] test test::test_ord ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.31s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "999c6f1e095cb3815652a473b0c727f56a1934aeb27f96fbe5f13c96d7024da3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999c6f1e095cb3815652a473b0c727f56a1934aeb27f96fbe5f13c96d7024da3", kill_on_drop: false }`
[INFO] [stdout] 999c6f1e095cb3815652a473b0c727f56a1934aeb27f96fbe5f13c96d7024da3