[INFO] fetching crate rsst 0.1.0...
[INFO] checking rsst-0.1.0 against master#dc375db7d8df0aa450e622c529147c95eee756f5 for pr-156749
[INFO] extracting crate rsst 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate rsst 0.1.0
[INFO] finished tweaking crates.io crate rsst 0.1.0
[INFO] tweaked toml for crates.io crate rsst 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rsst 0.1.0 on toolchain dc375db7d8df0aa450e622c529147c95eee756f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 230 packages to latest compatible versions
[INFO] [stderr]       Adding html5ever v0.22.5 (available: v0.39.0)
[INFO] [stderr]       Adding md5 v0.6.1 (available: v0.8.0)
[INFO] [stderr]       Adding rss v1.9.0 (available: v1.10.0)
[INFO] [stderr]       Adding structopt v0.2.18 (available: v0.3.26)
[INFO] [stderr]       Adding toml v0.4.10 (available: v1.1.2+spec-1.1.0)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rss v1.9.0
[INFO] [stderr]   Downloaded quick-xml v0.17.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e1f1c7c81d0730eb6360da688532f4af8569895b69d66d6a77d8a080bf0b93b9
[INFO] running `Command { std: "docker" "start" "e1f1c7c81d0730eb6360da688532f4af8569895b69d66d6a77d8a080bf0b93b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e1f1c7c81d0730eb6360da688532f4af8569895b69d66d6a77d8a080bf0b93b9" "/opt/rustwide/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1f1c7c81d0730eb6360da688532f4af8569895b69d66d6a77d8a080bf0b93b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e1f1c7c81d0730eb6360da688532f4af8569895b69d66d6a77d8a080bf0b93b9" "/opt/rustwide/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.4.32
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking memchr v2.8.2
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling unicode-segmentation v1.13.3
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]     Checking flate2 v1.1.9
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking native-tls v0.2.18
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking object v0.37.3
[INFO] [stderr]     Checking serde_json v1.0.150
[INFO] [stderr]     Checking quick-xml v0.17.2
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking publicsuffix v1.5.6
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling markup5ever v0.7.5
[INFO] [stderr]     Checking hyper v0.12.36
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking backtrace v0.3.76
[INFO] [stderr]    Compiling html5ever v0.22.5
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]     Checking rss v1.9.0
[INFO] [stderr]     Checking rsst v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/downstream.rs:172:39
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn serialize(&self, out: &mut io::Write) {
[INFO] [stdout]     |                                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn serialize(&self, out: &mut dyn io::Write) {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/downstream.rs:172:39
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn serialize(&self, out: &mut io::Write) {
[INFO] [stdout]     |                                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn serialize(&self, out: &mut dyn io::Write) {
[INFO] [stdout]     |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: html5ever v0.22.5, quick-xml v0.17.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "e1f1c7c81d0730eb6360da688532f4af8569895b69d66d6a77d8a080bf0b93b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1f1c7c81d0730eb6360da688532f4af8569895b69d66d6a77d8a080bf0b93b9", kill_on_drop: false }`
[INFO] [stdout] e1f1c7c81d0730eb6360da688532f4af8569895b69d66d6a77d8a080bf0b93b9
