[INFO] cloning repository https://github.com/PeterCxy/huffman-coding-cse104-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PeterCxy/huffman-coding-cse104-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeterCxy%2Fhuffman-coding-cse104-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeterCxy%2Fhuffman-coding-cse104-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f8dae1c157f776aaa7c340f21ebca5741efc6893 [INFO] testing PeterCxy/huffman-coding-cse104-rust against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeterCxy%2Fhuffman-coding-cse104-rust" "/workspace/builds/worker-13/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/PeterCxy/huffman-coding-cse104-rust on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/PeterCxy/huffman-coding-cse104-rust [INFO] finished tweaking git repo https://github.com/PeterCxy/huffman-coding-cse104-rust [INFO] tweaked toml for git repo https://github.com/PeterCxy/huffman-coding-cse104-rust written to /workspace/builds/worker-13/source/Cargo.toml [INFO] crate git repo https://github.com/PeterCxy/huffman-coding-cse104-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9b7cdf4a203e271a112e2ea56170ff0189316e01db1b5efa66895102c980999e [INFO] running `Command { std: "docker" "start" "-a" "9b7cdf4a203e271a112e2ea56170ff0189316e01db1b5efa66895102c980999e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9b7cdf4a203e271a112e2ea56170ff0189316e01db1b5efa66895102c980999e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9b7cdf4a203e271a112e2ea56170ff0189316e01db1b5efa66895102c980999e", kill_on_drop: false }` [INFO] [stdout] 9b7cdf4a203e271a112e2ea56170ff0189316e01db1b5efa66895102c980999e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b7bf48c67f3b474b7044537d48837f8589baba79c11f590f7c374f788c77f856 [INFO] running `Command { std: "docker" "start" "-a" "b7bf48c67f3b474b7044537d48837f8589baba79c11f590f7c374f788c77f856", kill_on_drop: false }` [INFO] [stderr] Compiling bit-vec v0.4.4 [INFO] [stderr] Compiling byteorder v1.2.1 [INFO] [stderr] Compiling huffman v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/traversal.rs:50:47 [INFO] [stdout] | [INFO] [stdout] 50 | fn visit_node<'b>(&'b mut self, node: &'a TraversableNode) -> Option, u8), TreeTraverser<'a>>> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TraversableNode` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:177:49 [INFO] [stdout] | [INFO] [stdout] 177 | fn _huffman_decode_step(cur_value: bool, node: &TraversableNode) -> &TreeNode { [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TraversableNode` [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.97s [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "b7bf48c67f3b474b7044537d48837f8589baba79c11f590f7c374f788c77f856", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b7bf48c67f3b474b7044537d48837f8589baba79c11f590f7c374f788c77f856", kill_on_drop: false }` [INFO] [stdout] b7bf48c67f3b474b7044537d48837f8589baba79c11f590f7c374f788c77f856 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 943dce35dcb6c9242237aaeb607a288e22bca05df1958eda9c35bf3370a67cbc [INFO] running `Command { std: "docker" "start" "-a" "943dce35dcb6c9242237aaeb607a288e22bca05df1958eda9c35bf3370a67cbc", kill_on_drop: false }` [INFO] [stderr] Compiling huffman v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/traversal.rs:50:47 [INFO] [stdout] | [INFO] [stdout] 50 | fn visit_node<'b>(&'b mut self, node: &'a TraversableNode) -> Option, u8), TreeTraverser<'a>>> { [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TraversableNode` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:177:49 [INFO] [stdout] | [INFO] [stdout] 177 | fn _huffman_decode_step(cur_value: bool, node: &TraversableNode) -> &TreeNode { [INFO] [stdout] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TraversableNode` [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.59s [INFO] running `Command { std: "docker" "inspect" "943dce35dcb6c9242237aaeb607a288e22bca05df1958eda9c35bf3370a67cbc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "943dce35dcb6c9242237aaeb607a288e22bca05df1958eda9c35bf3370a67cbc", kill_on_drop: false }` [INFO] [stdout] 943dce35dcb6c9242237aaeb607a288e22bca05df1958eda9c35bf3370a67cbc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] b3abb12383b60007a5e9cc19649e207232b36943a853a897808ce0641b4c0b92 [INFO] running `Command { std: "docker" "start" "-a" "b3abb12383b60007a5e9cc19649e207232b36943a853a897808ce0641b4c0b92", kill_on_drop: false }` [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/traversal.rs:50:47 [INFO] [stderr] | [INFO] [stderr] 50 | fn visit_node<'b>(&'b mut self, node: &'a TraversableNode) -> Option, u8), TreeTraverser<'a>>> { [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TraversableNode` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stderr] = note: for more information, see issue #80165 [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:177:49 [INFO] [stderr] | [INFO] [stderr] 177 | fn _huffman_decode_step(cur_value: bool, node: &TraversableNode) -> &TreeNode { [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn TraversableNode` [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition! [INFO] [stderr] = note: for more information, see issue #80165 [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/huffman-38cf6e6a3c9eff25) [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" "b3abb12383b60007a5e9cc19649e207232b36943a853a897808ce0641b4c0b92", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b3abb12383b60007a5e9cc19649e207232b36943a853a897808ce0641b4c0b92", kill_on_drop: false }` [INFO] [stdout] b3abb12383b60007a5e9cc19649e207232b36943a853a897808ce0641b4c0b92