[INFO] fetching crate libprefetch 0.1.1...
[INFO] checking libprefetch-0.1.1 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate libprefetch 0.1.1 into /workspace/builds/worker-41/source
[INFO] validating manifest of crates.io crate libprefetch 0.1.1 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libprefetch 0.1.1
[INFO] finished tweaking crates.io crate libprefetch 0.1.1
[INFO] tweaked toml for crates.io crate libprefetch 0.1.1 written to /workspace/builds/worker-41/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "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-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7abf175c12e07ac1b6c6ba6f814a37a7ab7bf3673a1140c21c9b20b909b4f4f8
[INFO] running `Command { std: "docker" "start" "-a" "7abf175c12e07ac1b6c6ba6f814a37a7ab7bf3673a1140c21c9b20b909b4f4f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7abf175c12e07ac1b6c6ba6f814a37a7ab7bf3673a1140c21c9b20b909b4f4f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7abf175c12e07ac1b6c6ba6f814a37a7ab7bf3673a1140c21c9b20b909b4f4f8", kill_on_drop: false }`
[INFO] [stdout] 7abf175c12e07ac1b6c6ba6f814a37a7ab7bf3673a1140c21c9b20b909b4f4f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 489fda90b5538bd0f7331f2f8c90a04296547b7dae693c93bb1bf5ac229239df
[INFO] running `Command { std: "docker" "start" "-a" "489fda90b5538bd0f7331f2f8c90a04296547b7dae693c93bb1bf5ac229239df", kill_on_drop: false }`
[INFO] [stderr]     Checking libprefetch v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/prefetch.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |       -> super::Result<(FormatVersion, Box<super::parser::Parser>)> {
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn super::parser::Parser`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/prefetch.rs:96:15
[INFO] [stdout]    |
[INFO] [stdout] 96 |   parser: Box<super::parser::Parser>,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn super::parser::Parser`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:49:30
[INFO] [stdout]    |
[INFO] [stdout] 49 |   fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/header.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 |   Box<super::parser::Parser>)> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn super::parser::Parser`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/header.rs:31:44
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let result: super::Result<(Header, Box<super::parser::Parser>)>;
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn super::parser::Parser`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/prefetch.rs:39:44
[INFO] [stdout]    |
[INFO] [stdout] 39 |       -> super::Result<(FormatVersion, Box<super::parser::Parser>)> {
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn super::parser::Parser`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/prefetch.rs:96:15
[INFO] [stdout]    |
[INFO] [stdout] 96 |   parser: Box<super::parser::Parser>,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn super::parser::Parser`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:49:30
[INFO] [stdout]    |
[INFO] [stdout] 49 |   fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/header.rs:29:7
[INFO] [stdout]    |
[INFO] [stdout] 29 |   Box<super::parser::Parser>)> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn super::parser::Parser`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/header.rs:31:44
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let result: super::Result<(Header, Box<super::parser::Parser>)>;
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn super::parser::Parser`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:44:34
[INFO] [stdout]    |
[INFO] [stdout] 44 |       Error::IOError(ref e) => e.description(),
[INFO] [stdout]    |                                  ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:60:26
[INFO] [stdout]    |
[INFO] [stdout] 60 |     write!(f, "{}", self.description())
[INFO] [stdout]    |                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:44:34
[INFO] [stdout]    |
[INFO] [stdout] 44 |       Error::IOError(ref e) => e.description(),
[INFO] [stdout]    |                                  ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:60:26
[INFO] [stdout]    |
[INFO] [stdout] 60 |     write!(f, "{}", self.description())
[INFO] [stdout]    |                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parser`
[INFO] [stdout]   --> src/prefetch.rs:96:3
[INFO] [stdout]    |
[INFO] [stdout] 96 |   parser: Box<super::parser::Parser>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parser`
[INFO] [stdout]   --> src/prefetch.rs:96:3
[INFO] [stdout]    |
[INFO] [stdout] 96 |   parser: Box<super::parser::Parser>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "489fda90b5538bd0f7331f2f8c90a04296547b7dae693c93bb1bf5ac229239df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "489fda90b5538bd0f7331f2f8c90a04296547b7dae693c93bb1bf5ac229239df", kill_on_drop: false }`
[INFO] [stdout] 489fda90b5538bd0f7331f2f8c90a04296547b7dae693c93bb1bf5ac229239df
