[INFO] cloning repository https://github.com/arnasjozonis/lz78
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arnasjozonis/lz78" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnasjozonis%2Flz78", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnasjozonis%2Flz78'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 873537bb7077881db9baf4021864d7a785efaa24
[INFO] testing arnasjozonis/lz78 against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farnasjozonis%2Flz78" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arnasjozonis/lz78 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 git repo https://github.com/arnasjozonis/lz78
[INFO] finished tweaking git repo https://github.com/arnasjozonis/lz78
[INFO] tweaked toml for git repo https://github.com/arnasjozonis/lz78 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/arnasjozonis/lz78 already has a lockfile, it will not be regenerated
[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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-01-01" "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] e8db66545da6d45eb912993086974f6a628732b33fa2c00462d97b9d5a605938
[INFO] running `Command { std: "docker" "start" "-a" "e8db66545da6d45eb912993086974f6a628732b33fa2c00462d97b9d5a605938", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8db66545da6d45eb912993086974f6a628732b33fa2c00462d97b9d5a605938", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8db66545da6d45eb912993086974f6a628732b33fa2c00462d97b9d5a605938", kill_on_drop: false }`
[INFO] [stdout] e8db66545da6d45eb912993086974f6a628732b33fa2c00462d97b9d5a605938
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-01-01" "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] 63f7b22cc7f573f04cc24924c9e3c00604833d5e1afc4a88683fe49950242020
[INFO] running `Command { std: "docker" "start" "-a" "63f7b22cc7f573f04cc24924c9e3c00604833d5e1afc4a88683fe49950242020", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitbit v0.2.0
[INFO] [stderr]    Compiling lz78 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: cannot borrow `dict` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/main.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let parent = dict.nodes.get(current_node.parent_node).unwrap();
[INFO] [stdout]     |                      ---------- immutable borrow occurs here
[INFO] [stdout] 136 |         dict.add_node(current_node.value, parent.index);
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here   ------------ immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `dict` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/main.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 171 |         let parent = dict.nodes.get(current_node.parent_node).unwrap();
[INFO] [stdout]     |                      ---------- immutable borrow occurs here
[INFO] [stdout] 172 |         dict.add_node(current_node.value, parent.index);
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here   ------------ immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "63f7b22cc7f573f04cc24924c9e3c00604833d5e1afc4a88683fe49950242020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f7b22cc7f573f04cc24924c9e3c00604833d5e1afc4a88683fe49950242020", kill_on_drop: false }`
[INFO] [stdout] 63f7b22cc7f573f04cc24924c9e3c00604833d5e1afc4a88683fe49950242020
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+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] 96a52cb07542ebc7d1d25fd5733e577acc9fd148337b564084364342d0c6ad42
[INFO] running `Command { std: "docker" "start" "-a" "96a52cb07542ebc7d1d25fd5733e577acc9fd148337b564084364342d0c6ad42", kill_on_drop: false }`
[INFO] [stderr]    Compiling lz78 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: cannot borrow `dict` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/main.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let parent = dict.nodes.get(current_node.parent_node).unwrap();
[INFO] [stdout]     |                      ---------- immutable borrow occurs here
[INFO] [stdout] 136 |         dict.add_node(current_node.value, parent.index);
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here   ------------ immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `dict` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/main.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 171 |         let parent = dict.nodes.get(current_node.parent_node).unwrap();
[INFO] [stdout]     |                      ---------- immutable borrow occurs here
[INFO] [stdout] 172 |         dict.add_node(current_node.value, parent.index);
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here   ------------ immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.13s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "96a52cb07542ebc7d1d25fd5733e577acc9fd148337b564084364342d0c6ad42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96a52cb07542ebc7d1d25fd5733e577acc9fd148337b564084364342d0c6ad42", kill_on_drop: false }`
[INFO] [stdout] 96a52cb07542ebc7d1d25fd5733e577acc9fd148337b564084364342d0c6ad42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f6a7223029a15280c37ef13e3a21f38fcebbb435a7e000238e44a0529ffdd84a
[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" "f6a7223029a15280c37ef13e3a21f38fcebbb435a7e000238e44a0529ffdd84a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: cannot borrow `dict` as mutable because it is also borrowed as immutable
[INFO] [stdout] running 2 tests
[INFO] [stderr]    --> src/main.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |         let parent = dict.nodes.get(current_node.parent_node).unwrap();
[INFO] [stderr]     |                      ---------- immutable borrow occurs here
[INFO] [stderr] 136 |         dict.add_node(current_node.value, parent.index);
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here   ------------ immutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `dict` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/main.rs:172:9
[INFO] [stderr]     |
[INFO] [stderr] 171 |         let parent = dict.nodes.get(current_node.parent_node).unwrap();
[INFO] [stderr]     |                      ---------- immutable borrow occurs here
[INFO] [stderr] 172 |         dict.add_node(current_node.value, parent.index);
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here   ------------ immutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lz78-25bda5f49a2a798a
[INFO] [stdout] test tests::test_adding_node ... ok
[INFO] [stdout] test tests::test_log2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f6a7223029a15280c37ef13e3a21f38fcebbb435a7e000238e44a0529ffdd84a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6a7223029a15280c37ef13e3a21f38fcebbb435a7e000238e44a0529ffdd84a", kill_on_drop: false }`
[INFO] [stdout] f6a7223029a15280c37ef13e3a21f38fcebbb435a7e000238e44a0529ffdd84a