[INFO] fetching crate blobstore 0.1.1...
[INFO] checking blobstore-0.1.1 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate blobstore 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate blobstore 0.1.1 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blobstore 0.1.1
[INFO] finished tweaking crates.io crate blobstore 0.1.1
[INFO] tweaked toml for crates.io crate blobstore 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5614f59893cd8d0a908944749185cf94e603f62cf8555266b7eb07d7ce80946c
[INFO] running `Command { std: "docker" "start" "-a" "5614f59893cd8d0a908944749185cf94e603f62cf8555266b7eb07d7ce80946c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5614f59893cd8d0a908944749185cf94e603f62cf8555266b7eb07d7ce80946c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5614f59893cd8d0a908944749185cf94e603f62cf8555266b7eb07d7ce80946c", kill_on_drop: false }`
[INFO] [stdout] 5614f59893cd8d0a908944749185cf94e603f62cf8555266b7eb07d7ce80946c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1dcc04a7775754f0533a560f6966b75c28440c16d525ddf5618fef655ef268bf
[INFO] running `Command { std: "docker" "start" "-a" "1dcc04a7775754f0533a560f6966b75c28440c16d525ddf5618fef655ef268bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking blobstore v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/hash.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 |     reader: &'a mut Read,
[INFO] [stdout]   |                     ^^^^ help: use `dyn`: `dyn Read`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hash.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(reader: &'a mut Read) -> HashedReader<'a> {
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Read`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn put(&self, item: &mut Read) -> Result<String, Error>;
[INFO] [stdout]    |                              ^^^^ help: use `dyn`: `dyn Read`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:42:32
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn put(&self, source: &mut Read) -> Result<String, Error> {
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Read`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/hash.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 |     reader: &'a mut Read,
[INFO] [stdout]   |                     ^^^^ help: use `dyn`: `dyn Read`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hash.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(reader: &'a mut Read) -> HashedReader<'a> {
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Read`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn put(&self, item: &mut Read) -> Result<String, Error>;
[INFO] [stdout]    |                              ^^^^ help: use `dyn`: `dyn Read`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:42:32
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn put(&self, source: &mut Read) -> Result<String, Error> {
[INFO] [stdout]    |                                ^^^^ help: use `dyn`: `dyn Read`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.39s
[INFO] running `Command { std: "docker" "inspect" "1dcc04a7775754f0533a560f6966b75c28440c16d525ddf5618fef655ef268bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dcc04a7775754f0533a560f6966b75c28440c16d525ddf5618fef655ef268bf", kill_on_drop: false }`
[INFO] [stdout] 1dcc04a7775754f0533a560f6966b75c28440c16d525ddf5618fef655ef268bf