[INFO] fetching crate tempo 0.1.0...
[INFO] testing tempo-0.1.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate tempo 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tempo 0.1.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tempo 0.1.0
[INFO] finished tweaking crates.io crate tempo 0.1.0
[INFO] tweaked toml for crates.io crate tempo 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a9b9a4d4e6cdc76b6428057535ee01f885e3f7c0aec95f8c282de8623c03936
[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" "2a9b9a4d4e6cdc76b6428057535ee01f885e3f7c0aec95f8c282de8623c03936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a9b9a4d4e6cdc76b6428057535ee01f885e3f7c0aec95f8c282de8623c03936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a9b9a4d4e6cdc76b6428057535ee01f885e3f7c0aec95f8c282de8623c03936", kill_on_drop: false }`
[INFO] [stdout] 2a9b9a4d4e6cdc76b6428057535ee01f885e3f7c0aec95f8c282de8623c03936
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "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] de8c2aa7cc5bfb2ce583d77c4cc37b2143be00846008034ff28f18e9e66c20fd
[INFO] running `Command { std: "docker" "start" "-a" "de8c2aa7cc5bfb2ce583d77c4cc37b2143be00846008034ff28f18e9e66c20fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling tempo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]  --> src/errors.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / error_chain! {
[INFO] [stdout] 2 | |     types {
[INFO] [stdout] 3 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 4 | |     }
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     }
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]   = note: this warning originates in the macro `error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:31:41
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn emit_main_function_start(write: &mut Write) -> Result<(), io::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] 31 - fn emit_main_function_start(write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 31 + fn emit_main_function_start(write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:36:39
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn emit_main_function_end(write: &mut Write) -> Result<(), io::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] 36 - fn emit_main_function_end(write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 36 + fn emit_main_function_end(write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:40:38
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn emit_code(code: &str, write: &mut Write) -> Result<(), io::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] 40 - fn emit_code(code: &str, write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 40 + fn emit_code(code: &str, write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn emit_text(text: &str, write: &mut Write) -> Result<(), io::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] 44 - fn emit_text(text: &str, write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 44 + fn emit_text(text: &str, write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]  --> src/errors.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / error_chain! {
[INFO] [stdout] 2 | |     types {
[INFO] [stdout] 3 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 4 | |     }
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     }
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.25s
[INFO] running `Command { std: "docker" "inspect" "de8c2aa7cc5bfb2ce583d77c4cc37b2143be00846008034ff28f18e9e66c20fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de8c2aa7cc5bfb2ce583d77c4cc37b2143be00846008034ff28f18e9e66c20fd", kill_on_drop: false }`
[INFO] [stdout] de8c2aa7cc5bfb2ce583d77c4cc37b2143be00846008034ff28f18e9e66c20fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbbcb7dd56c9d3c3e1c142b2a499167bed6bbc025956b4e30c19740f9976b090
[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" "bbbcb7dd56c9d3c3e1c142b2a499167bed6bbc025956b4e30c19740f9976b090", kill_on_drop: false }`
[INFO] [stderr]    Compiling tempo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]  --> src/errors.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / error_chain! {
[INFO] [stdout] 2 | |     types {
[INFO] [stdout] 3 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 4 | |     }
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     }
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]   = note: this warning originates in the macro `error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:31:41
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn emit_main_function_start(write: &mut Write) -> Result<(), io::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] 31 - fn emit_main_function_start(write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 31 + fn emit_main_function_start(write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:36:39
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn emit_main_function_end(write: &mut Write) -> Result<(), io::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] 36 - fn emit_main_function_end(write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 36 + fn emit_main_function_end(write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:40:38
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn emit_code(code: &str, write: &mut Write) -> Result<(), io::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] 40 - fn emit_code(code: &str, write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 40 + fn emit_code(code: &str, write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn emit_text(text: &str, write: &mut Write) -> Result<(), io::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] 44 - fn emit_text(text: &str, write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 44 + fn emit_text(text: &str, write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]  --> src/errors.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / error_chain! {
[INFO] [stdout] 2 | |     types {
[INFO] [stdout] 3 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 4 | |     }
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     }
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[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/errors.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / error_chain! {
[INFO] [stdout] 2 | |     types {
[INFO] [stdout] 3 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 4 | |     }
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     }
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]   = note: this warning originates in the macro `error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:31:41
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn emit_main_function_start(write: &mut Write) -> Result<(), io::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] 31 - fn emit_main_function_start(write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 31 + fn emit_main_function_start(write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:36:39
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn emit_main_function_end(write: &mut Write) -> Result<(), io::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] 36 - fn emit_main_function_end(write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 36 + fn emit_main_function_end(write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:40:38
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn emit_code(code: &str, write: &mut Write) -> Result<(), io::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] 40 - fn emit_code(code: &str, write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 40 + fn emit_code(code: &str, write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trans.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn emit_text(text: &str, write: &mut Write) -> Result<(), io::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] 44 - fn emit_text(text: &str, write: &mut Write) -> Result<(), io::Error> {
[INFO] [stdout] 44 + fn emit_text(text: &str, write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]  --> src/errors.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / error_chain! {
[INFO] [stdout] 2 | |     types {
[INFO] [stdout] 3 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] 4 | |     }
[INFO] [stdout] ... |
[INFO] [stdout] 8 | |     }
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "bbbcb7dd56c9d3c3e1c142b2a499167bed6bbc025956b4e30c19740f9976b090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbbcb7dd56c9d3c3e1c142b2a499167bed6bbc025956b4e30c19740f9976b090", kill_on_drop: false }`
[INFO] [stdout] bbbcb7dd56c9d3c3e1c142b2a499167bed6bbc025956b4e30c19740f9976b090
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f154ed29684d05535c6f78bfd2b3f6a08c2c913737fef6f8fc5f1a6b8e1c91ee
[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" "f154ed29684d05535c6f78bfd2b3f6a08c2c913737fef6f8fc5f1a6b8e1c91ee", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]  --> src/errors.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / error_chain! {
[INFO] [stderr] 2 | |     types {
[INFO] [stderr] 3 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] 4 | |     }
[INFO] [stderr] ... |
[INFO] [stderr] 8 | |     }
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]   = note: this warning originates in the macro `error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/trans.rs:31:41
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn emit_main_function_start(write: &mut Write) -> Result<(), io::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] 31 - fn emit_main_function_start(write: &mut Write) -> Result<(), io::Error> {
[INFO] [stderr] 31 + fn emit_main_function_start(write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/trans.rs:36:39
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn emit_main_function_end(write: &mut Write) -> Result<(), io::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] 36 - fn emit_main_function_end(write: &mut Write) -> Result<(), io::Error> {
[INFO] [stderr] 36 + fn emit_main_function_end(write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/trans.rs:40:38
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn emit_code(code: &str, write: &mut Write) -> Result<(), io::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] 40 - fn emit_code(code: &str, write: &mut Write) -> Result<(), io::Error> {
[INFO] [stderr] 40 + fn emit_code(code: &str, write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/trans.rs:44:38
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn emit_text(text: &str, write: &mut Write) -> Result<(), io::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] 44 - fn emit_text(text: &str, write: &mut Write) -> Result<(), io::Error> {
[INFO] [stderr] 44 + fn emit_text(text: &str, write: &mut dyn Write) -> Result<(), io::Error> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]  --> src/errors.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / error_chain! {
[INFO] [stderr] 2 | |     types {
[INFO] [stderr] 3 | |         Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] 4 | |     }
[INFO] [stderr] ... |
[INFO] [stderr] 8 | |     }
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in the macro `error_chain_processed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `tempo` (lib) generated 6 warnings
[INFO] [stderr] warning: `tempo` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tempo-f69875553be0c027)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test parse::test::parses_empty_string ... ok
[INFO] [stdout] test parse::test::parses_standalone_code ... ok
[INFO] [stdout] test parse::test::parses_standalone_new_lines ... ok
[INFO] [stdout] test parse::test::parses_standalone_text ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tempo-2c3c2467dd4ecdad)
[INFO] [stderr]    Doc-tests tempo
[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" "f154ed29684d05535c6f78bfd2b3f6a08c2c913737fef6f8fc5f1a6b8e1c91ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f154ed29684d05535c6f78bfd2b3f6a08c2c913737fef6f8fc5f1a6b8e1c91ee", kill_on_drop: false }`
[INFO] [stdout] f154ed29684d05535c6f78bfd2b3f6a08c2c913737fef6f8fc5f1a6b8e1c91ee