[INFO] fetching crate huffman-rust 0.1.1...
[INFO] testing huffman-rust-0.1.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate huffman-rust 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate huffman-rust 0.1.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate huffman-rust 0.1.1
[INFO] finished tweaking crates.io crate huffman-rust 0.1.1
[INFO] tweaked toml for crates.io crate huffman-rust 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 7570cc0c5de0e60e52a534684288a8af4074d24ec4b22fcc7d64f6eeb7fa036c
[INFO] running `Command { std: "docker" "start" "-a" "7570cc0c5de0e60e52a534684288a8af4074d24ec4b22fcc7d64f6eeb7fa036c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7570cc0c5de0e60e52a534684288a8af4074d24ec4b22fcc7d64f6eeb7fa036c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7570cc0c5de0e60e52a534684288a8af4074d24ec4b22fcc7d64f6eeb7fa036c", kill_on_drop: false }`
[INFO] [stdout] 7570cc0c5de0e60e52a534684288a8af4074d24ec4b22fcc7d64f6eeb7fa036c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 132abf7e5cb3bb5702bcd088fc528c1b34a142ad7e687b7a949467a91e9d6dda
[INFO] running `Command { std: "docker" "start" "-a" "132abf7e5cb3bb5702bcd088fc528c1b34a142ad7e687b7a949467a91e9d6dda", kill_on_drop: false }`
[INFO] [stderr]    Compiling huffman-rust v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:19:87
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 - pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 19 + pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:23:80
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 23 + pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:27:86
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 - pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 27 + pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:55:79
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 55 - pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 55 + pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/canonical.rs:45:69
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<Error>> {
[INFO] [stdout]    |                                                                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 -     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<Error>> {
[INFO] [stdout] 45 +     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/canonical.rs:73:94
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 73 -     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout] 73 +     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/canonical.rs:87:94
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 -     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout] 87 +     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `Command { std: "docker" "inspect" "132abf7e5cb3bb5702bcd088fc528c1b34a142ad7e687b7a949467a91e9d6dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "132abf7e5cb3bb5702bcd088fc528c1b34a142ad7e687b7a949467a91e9d6dda", kill_on_drop: false }`
[INFO] [stdout] 132abf7e5cb3bb5702bcd088fc528c1b34a142ad7e687b7a949467a91e9d6dda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 494d6a55113c018fc75c77fbaae9f40d68569efd17f15d5fa955f5fa4efacfb3
[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" "494d6a55113c018fc75c77fbaae9f40d68569efd17f15d5fa955f5fa4efacfb3", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:19:87
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 - pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 19 + pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:23:80
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 23 + pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:27:86
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 - pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 27 + pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:55:79
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 55 - pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 55 + pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/canonical.rs:45:69
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<Error>> {
[INFO] [stdout]    |                                                                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 -     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<Error>> {
[INFO] [stdout] 45 +     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/canonical.rs:73:94
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 73 -     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout] 73 +     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/canonical.rs:87:94
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 -     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout] 87 +     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling huffman-rust v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:19:87
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 - pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 19 + pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:23:80
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 23 + pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:27:86
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 - pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 27 + pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:55:79
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 55 - pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stdout] 55 + pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/canonical.rs:45:69
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<Error>> {
[INFO] [stdout]    |                                                                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 -     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<Error>> {
[INFO] [stdout] 45 +     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/canonical.rs:73:94
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 73 -     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout] 73 +     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/canonical.rs:87:94
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 -     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stdout] 87 +     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.19s
[INFO] running `Command { std: "docker" "inspect" "494d6a55113c018fc75c77fbaae9f40d68569efd17f15d5fa955f5fa4efacfb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "494d6a55113c018fc75c77fbaae9f40d68569efd17f15d5fa955f5fa4efacfb3", kill_on_drop: false }`
[INFO] [stdout] 494d6a55113c018fc75c77fbaae9f40d68569efd17f15d5fa955f5fa4efacfb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 025e5c414a9fc8d2a112710cedd00c988271d367fcac584c6fc8e460f448c77e
[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" "025e5c414a9fc8d2a112710cedd00c988271d367fcac584c6fc8e460f448c77e", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:19:87
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                                       ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 19 - pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stderr] 19 + pub fn buffered_encode<R: Read + Seek, W: Write>(read: R, write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:23:80
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                                ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 23 - pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<Error>> {
[INFO] [stderr] 23 + pub fn buffered_decode<R: Read, W: Write>(read: R, write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:27:86
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                                      ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 27 - pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stderr] 27 + pub fn encode<R: Read + Seek, W: Write>(mut read: R, mut write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:55:79
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 55 - pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<Error>> {
[INFO] [stderr] 55 + pub fn decode<R: Read, W: Write>(mut read: R, mut write: W) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/canonical.rs:45:69
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<Error>> {
[INFO] [stderr]    |                                                                     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 45 -     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<Error>> {
[INFO] [stderr] 45 +     pub fn from_read<R: Read>(read: R) -> Result<CanonicalTree, Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/canonical.rs:73:94
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                                              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 73 -     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stderr] 73 +     pub fn encode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/canonical.rs:87:94
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                                              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 87 -     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<Error>> {
[INFO] [stderr] 87 +     pub fn decode<R: Read, W: Write>(&self, read: & mut R, write: & mut W) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `huffman-rust` (lib) generated 7 warnings
[INFO] [stderr] warning: `huffman-rust` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/huffman_rust-8f8d0f87e892a971)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test bitstream::tests::test_drop_no_panic ... ok
[INFO] [stdout] test bitstream::tests::test_reader ... ok
[INFO] [stdout] test bitstream::tests::test_writer ... ok
[INFO] [stderr]    Doc-tests huffman-rust
[INFO] [stdout] test canonical::tests::test_small_sample_string ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test bitstream::tests::test_writer_partial ... ok
[INFO] [stdout] test bitstream::tests::test_empty_reader ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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" "025e5c414a9fc8d2a112710cedd00c988271d367fcac584c6fc8e460f448c77e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "025e5c414a9fc8d2a112710cedd00c988271d367fcac584c6fc8e460f448c77e", kill_on_drop: false }`
[INFO] [stdout] 025e5c414a9fc8d2a112710cedd00c988271d367fcac584c6fc8e460f448c77e