[INFO] cloning repository https://github.com/jonayerdi/huffman
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonayerdi/huffman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonayerdi%2Fhuffman", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonayerdi%2Fhuffman'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5bee164e43f1f5e73a60debc9e69c124f9ff8125
[INFO] checking jonayerdi/huffman against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonayerdi%2Fhuffman" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonayerdi/huffman on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jonayerdi/huffman
[INFO] finished tweaking git repo https://github.com/jonayerdi/huffman
[INFO] tweaked toml for git repo https://github.com/jonayerdi/huffman written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jonayerdi/huffman already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2359fcd9c10c44b8aff7841d1b803a21060f4f16819fbc1166ee2118887eafe
[INFO] running `Command { std: "docker" "start" "-a" "d2359fcd9c10c44b8aff7841d1b803a21060f4f16819fbc1166ee2118887eafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2359fcd9c10c44b8aff7841d1b803a21060f4f16819fbc1166ee2118887eafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2359fcd9c10c44b8aff7841d1b803a21060f4f16819fbc1166ee2118887eafe", kill_on_drop: false }`
[INFO] [stdout] d2359fcd9c10c44b8aff7841d1b803a21060f4f16819fbc1166ee2118887eafe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46217cd801105779117f1fc6e5b0256338a7bf65acd06a86338ae95cba76e57b
[INFO] running `Command { std: "docker" "start" "-a" "46217cd801105779117f1fc6e5b0256338a7bf65acd06a86338ae95cba76e57b", kill_on_drop: false }`
[INFO] [stderr]     Checking huffman v0.1.0 (/opt/rustwide/workdir/huffman)
[INFO] [stderr]     Checking hf v0.1.0 (/opt/rustwide/workdir/hf)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "46217cd801105779117f1fc6e5b0256338a7bf65acd06a86338ae95cba76e57b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46217cd801105779117f1fc6e5b0256338a7bf65acd06a86338ae95cba76e57b", kill_on_drop: false }`
[INFO] [stdout] 46217cd801105779117f1fc6e5b0256338a7bf65acd06a86338ae95cba76e57b
[INFO] checking jonayerdi/huffman against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonayerdi%2Fhuffman" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonayerdi/huffman on toolchain f9935d29d867449445ee008640ccca1bf1ae0889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jonayerdi/huffman
[INFO] finished tweaking git repo https://github.com/jonayerdi/huffman
[INFO] tweaked toml for git repo https://github.com/jonayerdi/huffman written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jonayerdi/huffman already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c746ed9340bf076e8cb5e158ccc1b31cafb062163f96da3ef4cd2c8c60d34cad
[INFO] running `Command { std: "docker" "start" "-a" "c746ed9340bf076e8cb5e158ccc1b31cafb062163f96da3ef4cd2c8c60d34cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c746ed9340bf076e8cb5e158ccc1b31cafb062163f96da3ef4cd2c8c60d34cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c746ed9340bf076e8cb5e158ccc1b31cafb062163f96da3ef4cd2c8c60d34cad", kill_on_drop: false }`
[INFO] [stdout] c746ed9340bf076e8cb5e158ccc1b31cafb062163f96da3ef4cd2c8c60d34cad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e30545896e6a24a9f1f8eb79f84d8db92f346730fd5d6ec44398e18ccde6b9d
[INFO] running `Command { std: "docker" "start" "-a" "3e30545896e6a24a9f1f8eb79f84d8db92f346730fd5d6ec44398e18ccde6b9d", kill_on_drop: false }`
[INFO] [stderr]     Checking huffman v0.1.0 (/opt/rustwide/workdir/huffman)
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> huffman/src/serialize.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn write_magic<W: io::Write>(mut dst: W) -> io::Result<usize> {
[INFO] [stdout]    |                                  ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 38 |     dst.write_all(&MAGIC).map(|_| MAGIC.len())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> huffman/src/serialize.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn write_encoding<W: io::Write>(mut dst: W, encoding: Encoding) -> io::Result<usize> {
[INFO] [stdout]    |                                     ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 47 |     dst.write_all(&data).map(|_| data.len())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `huffman` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> huffman/src/serialize.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn write_magic<W: io::Write>(mut dst: W) -> io::Result<usize> {
[INFO] [stdout]    |                                  ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 38 |     dst.write_all(&MAGIC).map(|_| MAGIC.len())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> huffman/src/serialize.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn write_encoding<W: io::Write>(mut dst: W, encoding: Encoding) -> io::Result<usize> {
[INFO] [stdout]    |                                     ---------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 47 |     dst.write_all(&data).map(|_| data.len())
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `huffman` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "3e30545896e6a24a9f1f8eb79f84d8db92f346730fd5d6ec44398e18ccde6b9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e30545896e6a24a9f1f8eb79f84d8db92f346730fd5d6ec44398e18ccde6b9d", kill_on_drop: false }`
[INFO] [stdout] 3e30545896e6a24a9f1f8eb79f84d8db92f346730fd5d6ec44398e18ccde6b9d