[INFO] fetching crate prefix-tree 0.5.0...
[INFO] testing prefix-tree-0.5.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate prefix-tree 0.5.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate prefix-tree 0.5.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prefix-tree 0.5.0
[INFO] finished tweaking crates.io crate prefix-tree 0.5.0
[INFO] tweaked toml for crates.io crate prefix-tree 0.5.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-07-24" "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] bb03320df58255fe53315d47e2304aa4fba0cd6e39e08729d919113139c63c28
[INFO] running `Command { std: "docker" "start" "-a" "bb03320df58255fe53315d47e2304aa4fba0cd6e39e08729d919113139c63c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb03320df58255fe53315d47e2304aa4fba0cd6e39e08729d919113139c63c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb03320df58255fe53315d47e2304aa4fba0cd6e39e08729d919113139c63c28", kill_on_drop: false }`
[INFO] [stdout] bb03320df58255fe53315d47e2304aa4fba0cd6e39e08729d919113139c63c28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddcc48e0f305cc507f7c23c2e817d3017936c111900793cb3ef4e90d8e30742a
[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" "ddcc48e0f305cc507f7c23c2e817d3017936c111900793cb3ef4e90d8e30742a", kill_on_drop: false }`
[INFO] [stderr]    Compiling prefix-tree v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "ddcc48e0f305cc507f7c23c2e817d3017936c111900793cb3ef4e90d8e30742a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddcc48e0f305cc507f7c23c2e817d3017936c111900793cb3ef4e90d8e30742a", kill_on_drop: false }`
[INFO] [stdout] ddcc48e0f305cc507f7c23c2e817d3017936c111900793cb3ef4e90d8e30742a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-07-24" "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] 6995a1fab91b01a5b0396c494e451e596cd180c7effdfcde0ccfd80ac4bf6d6e
[INFO] running `Command { std: "docker" "start" "-a" "6995a1fab91b01a5b0396c494e451e596cd180c7effdfcde0ccfd80ac4bf6d6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling syn v1.0.37
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling quote v1.0.7
[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 v1.3.9
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling quickcheck v0.9.2
[INFO] [stderr]    Compiling quickcheck_macros v0.9.1
[INFO] [stderr]    Compiling prefix-tree v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 26.80s
[INFO] running `Command { std: "docker" "inspect" "6995a1fab91b01a5b0396c494e451e596cd180c7effdfcde0ccfd80ac4bf6d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6995a1fab91b01a5b0396c494e451e596cd180c7effdfcde0ccfd80ac4bf6d6e", kill_on_drop: false }`
[INFO] [stdout] 6995a1fab91b01a5b0396c494e451e596cd180c7effdfcde0ccfd80ac4bf6d6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e74480c3099637adad613b87b46b7dec66d32de3ab263703bf7ad437f18140b7
[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" "e74480c3099637adad613b87b46b7dec66d32de3ab263703bf7ad437f18140b7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/prefix_tree-750632d77cfeab62
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tree::tests::test_find_mut ... ok
[INFO] [stderr]    Doc-tests prefix-tree
[INFO] [stdout] test tree::tests::test_common_prefix ... ok
[INFO] [stdout] test tree::tests::test_remove ... ok
[INFO] [stdout] test tree::tests::test_insert ... ok
[INFO] [stdout] test tree::tests::test_find ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test src/set.rs - set::PrefixSet<T>::clear (line 31) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::is_empty (line 154) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::clear (line 53) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::keys (line 213) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::get_mut (line 88) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::new (line 18) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::remove (line 135) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::len (line 170) ... ok
[INFO] [stdout] test src/set.rs - set::PrefixSet<T>::contains (line 47) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::values (line 230) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::insert (line 109) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::get (line 69) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::contains_key (line 34) ... ok
[INFO] [stdout] test src/map.rs - map::PrefixMap<K, V>::iter (line 186) ... ok
[INFO] [stdout] test src/set.rs - set::PrefixSet<T>::new (line 16) ... ok
[INFO] [stdout] test src/set.rs - set::PrefixSet<T>::is_empty (line 105) ... ok
[INFO] [stdout] test src/set.rs - set::PrefixSet<T>::insert (line 66) ... ok
[INFO] [stdout] test src/set.rs - set::PrefixSet<T>::remove (line 86) ... ok
[INFO] [stdout] test src/set.rs - set::PrefixSet<T>::len (line 121) ... ok
[INFO] [stdout] test src/set.rs - set::PrefixSet<T>::iter (line 137) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e74480c3099637adad613b87b46b7dec66d32de3ab263703bf7ad437f18140b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e74480c3099637adad613b87b46b7dec66d32de3ab263703bf7ad437f18140b7", kill_on_drop: false }`
[INFO] [stdout] e74480c3099637adad613b87b46b7dec66d32de3ab263703bf7ad437f18140b7