[INFO] fetching crate lossyq 0.1.19...
[INFO] testing lossyq-0.1.19 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate lossyq 0.1.19 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate lossyq 0.1.19 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lossyq 0.1.19
[INFO] finished tweaking crates.io crate lossyq 0.1.19
[INFO] tweaked toml for crates.io crate lossyq 0.1.19 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04ef2a582a76b6cd81943dbdd16bb5f5491af21d51386f77bd15e60aaf3433bf
[INFO] running `Command { std: "docker" "start" "-a" "04ef2a582a76b6cd81943dbdd16bb5f5491af21d51386f77bd15e60aaf3433bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04ef2a582a76b6cd81943dbdd16bb5f5491af21d51386f77bd15e60aaf3433bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04ef2a582a76b6cd81943dbdd16bb5f5491af21d51386f77bd15e60aaf3433bf", kill_on_drop: false }`
[INFO] [stdout] 04ef2a582a76b6cd81943dbdd16bb5f5491af21d51386f77bd15e60aaf3433bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85531071cbd85af40dfc017e8cb07e4ee52a35c953c8d9c90871bc01253ac939
[INFO] running `Command { std: "docker" "start" "-a" "85531071cbd85af40dfc017e8cb07e4ee52a35c953c8d9c90871bc01253ac939", kill_on_drop: false }`
[INFO] [stderr]    Compiling lossyq v0.1.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/spsc/noloss.rs:16:37
[INFO] [stdout]    |
[INFO] [stdout] 16 |                      overflow: &mut Overflow<Input=T>)
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Overflow<Input=T>`
[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: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/cb/mod.rs:157:35
[INFO] [stdout]     |
[INFO] [stdout] 157 |               if chk_flag == (*v).compare_and_swap(chk_flag, new_flag, Ordering::AcqRel) {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/cb/mod.rs:88:16
[INFO] [stdout]    |
[INFO] [stdout] 88 |           panic!(format!("write_tmp: {} is invalid. size is {}, seqno is {}, serial is {}",
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 89 | |           self.write_tmp, self.size, seqno, serial));
[INFO] [stdout]    | |___________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 88 |         panic!("write_tmp: {} is invalid. size is {}, seqno is {}, serial is {}",
[INFO] [stdout] 89 |           self.write_tmp, self.size, seqno, serial);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cb/mod.rs:103:16
[INFO] [stdout]     |
[INFO] [stdout] 103 |         panic!(format!("pos: {} is invalid. size is {}, seqno is {}, serial is {}",pos, self.size, seqno, serial));
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 103 |         panic!("pos: {} is invalid. size is {}, seqno is {}, serial is {}",pos, self.size, seqno, serial);
[INFO] [stdout]     |               --                                                                                       --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cb/mod.rs:167:22
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...   panic!(format!("pos: {} is invalid. size is {}, count is {}, seqno is {}, serial is {}",pos, self.size, count, seqno, serial));
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 167 |               panic!("pos: {} is invalid. size is {}, count is {}, seqno is {}, serial is {}",pos, self.size, count, seqno, serial);
[INFO] [stdout]     |                     --                                                                                                           --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cb/mod.rs:173:18
[INFO] [stdout]     |
[INFO] [stdout] 173 |           panic!(format!("count: {} is invalid. size is {}, pos is {}, seqno is {}, serial is {}",count, self.size, pos, seqno, serial));
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 173 |           panic!("count: {} is invalid. size is {}, pos is {}, seqno is {}, serial is {}",count, self.size, pos, seqno, serial);
[INFO] [stdout]     |                 --                                                                                                           --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "85531071cbd85af40dfc017e8cb07e4ee52a35c953c8d9c90871bc01253ac939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85531071cbd85af40dfc017e8cb07e4ee52a35c953c8d9c90871bc01253ac939", kill_on_drop: false }`
[INFO] [stdout] 85531071cbd85af40dfc017e8cb07e4ee52a35c953c8d9c90871bc01253ac939
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d2ca3b2ed868bfabe6aad121a0a97bae4b89d8610db77f15a2795e8cb3c8ef4
[INFO] running `Command { std: "docker" "start" "-a" "0d2ca3b2ed868bfabe6aad121a0a97bae4b89d8610db77f15a2795e8cb3c8ef4", kill_on_drop: false }`
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/spsc/noloss.rs:16:37
[INFO] [stdout]    |
[INFO] [stdout] 16 |                      overflow: &mut Overflow<Input=T>)
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Overflow<Input=T>`
[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: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/cb/mod.rs:157:35
[INFO] [stdout]     |
[INFO] [stdout] 157 |               if chk_flag == (*v).compare_and_swap(chk_flag, new_flag, Ordering::AcqRel) {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/cb/mod.rs:88:16
[INFO] [stdout]    |
[INFO] [stdout] 88 |           panic!(format!("write_tmp: {} is invalid. size is {}, seqno is {}, serial is {}",
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 89 | |           self.write_tmp, self.size, seqno, serial));
[INFO] [stdout]    | |___________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 88 |         panic!("write_tmp: {} is invalid. size is {}, seqno is {}, serial is {}",
[INFO] [stdout] 89 |           self.write_tmp, self.size, seqno, serial);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cb/mod.rs:103:16
[INFO] [stdout]     |
[INFO] [stdout] 103 |         panic!(format!("pos: {} is invalid. size is {}, seqno is {}, serial is {}",pos, self.size, seqno, serial));
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 103 |         panic!("pos: {} is invalid. size is {}, seqno is {}, serial is {}",pos, self.size, seqno, serial);
[INFO] [stdout]     |               --                                                                                       --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cb/mod.rs:167:22
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...   panic!(format!("pos: {} is invalid. size is {}, count is {}, seqno is {}, serial is {}",pos, self.size, count, seqno, serial));
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 167 |               panic!("pos: {} is invalid. size is {}, count is {}, seqno is {}, serial is {}",pos, self.size, count, seqno, serial);
[INFO] [stdout]     |                     --                                                                                                           --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cb/mod.rs:173:18
[INFO] [stdout]     |
[INFO] [stdout] 173 |           panic!(format!("count: {} is invalid. size is {}, pos is {}, seqno is {}, serial is {}",count, self.size, pos, seqno, serial));
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 173 |           panic!("count: {} is invalid. size is {}, pos is {}, seqno is {}, serial is {}",count, self.size, pos, seqno, serial);
[INFO] [stdout]     |                 --                                                                                                           --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lossyq v0.1.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/cb/tests.rs:144:71
[INFO] [stdout]     |
[INFO] [stdout] 144 |   let c = x.iter().fold(String::new(), |mut acc,x| { acc.push_str(x); (acc) } );
[INFO] [stdout]     |                                                                       ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/spsc/noloss.rs:16:37
[INFO] [stdout]    |
[INFO] [stdout] 16 |                      overflow: &mut Overflow<Input=T>)
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Overflow<Input=T>`
[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: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/cb/mod.rs:157:35
[INFO] [stdout]     |
[INFO] [stdout] 157 |               if chk_flag == (*v).compare_and_swap(chk_flag, new_flag, Ordering::AcqRel) {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/cb/mod.rs:88:16
[INFO] [stdout]    |
[INFO] [stdout] 88 |           panic!(format!("write_tmp: {} is invalid. size is {}, seqno is {}, serial is {}",
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 89 | |           self.write_tmp, self.size, seqno, serial));
[INFO] [stdout]    | |___________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 88 |         panic!("write_tmp: {} is invalid. size is {}, seqno is {}, serial is {}",
[INFO] [stdout] 89 |           self.write_tmp, self.size, seqno, serial);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cb/mod.rs:103:16
[INFO] [stdout]     |
[INFO] [stdout] 103 |         panic!(format!("pos: {} is invalid. size is {}, seqno is {}, serial is {}",pos, self.size, seqno, serial));
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 103 |         panic!("pos: {} is invalid. size is {}, seqno is {}, serial is {}",pos, self.size, seqno, serial);
[INFO] [stdout]     |               --                                                                                       --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cb/mod.rs:167:22
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...   panic!(format!("pos: {} is invalid. size is {}, count is {}, seqno is {}, serial is {}",pos, self.size, count, seqno, serial));
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 167 |               panic!("pos: {} is invalid. size is {}, count is {}, seqno is {}, serial is {}",pos, self.size, count, seqno, serial);
[INFO] [stdout]     |                     --                                                                                                           --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/cb/mod.rs:173:18
[INFO] [stdout]     |
[INFO] [stdout] 173 |           panic!(format!("count: {} is invalid. size is {}, pos is {}, seqno is {}, serial is {}",count, self.size, pos, seqno, serial));
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 173 |           panic!("count: {} is invalid. size is {}, pos is {}, seqno is {}, serial is {}",count, self.size, pos, seqno, serial);
[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 1.81s
[INFO] running `Command { std: "docker" "inspect" "0d2ca3b2ed868bfabe6aad121a0a97bae4b89d8610db77f15a2795e8cb3c8ef4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d2ca3b2ed868bfabe6aad121a0a97bae4b89d8610db77f15a2795e8cb3c8ef4", kill_on_drop: false }`
[INFO] [stdout] 0d2ca3b2ed868bfabe6aad121a0a97bae4b89d8610db77f15a2795e8cb3c8ef4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4cfae34212cac49667e75e20b8859e0b8da7aca01c10342a5ebc39fe0e5b455b
[INFO] running `Command { std: "docker" "start" "-a" "4cfae34212cac49667e75e20b8859e0b8da7aca01c10342a5ebc39fe0e5b455b", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spsc/noloss.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 |                      overflow: &mut Overflow<Input=T>)
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Overflow<Input=T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/cb/mod.rs:157:35
[INFO] [stderr]     |
[INFO] [stderr] 157 |               if chk_flag == (*v).compare_and_swap(chk_flag, new_flag, Ordering::AcqRel) {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/cb/mod.rs:88:16
[INFO] [stderr]    |
[INFO] [stderr] 88 |           panic!(format!("write_tmp: {} is invalid. size is {}, seqno is {}, serial is {}",
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 89 | |           self.write_tmp, self.size, seqno, serial));
[INFO] [stderr]    | |___________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]    |
[INFO] [stderr] 88 |         panic!("write_tmp: {} is invalid. size is {}, seqno is {}, serial is {}",
[INFO] [stderr] 89 |           self.write_tmp, self.size, seqno, serial);
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/cb/mod.rs:103:16
[INFO] [stderr]     |
[INFO] [stderr] 103 |         panic!(format!("pos: {} is invalid. size is {}, seqno is {}, serial is {}",pos, self.size, seqno, serial));
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 103 |         panic!("pos: {} is invalid. size is {}, seqno is {}, serial is {}",pos, self.size, seqno, serial);
[INFO] [stderr]     |               --                                                                                       --
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/cb/mod.rs:167:22
[INFO] [stderr]     |
[INFO] [stderr] 167 | ...   panic!(format!("pos: {} is invalid. size is {}, count is {}, seqno is {}, serial is {}",pos, self.size, count, seqno, serial));
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 167 |               panic!("pos: {} is invalid. size is {}, count is {}, seqno is {}, serial is {}",pos, self.size, count, seqno, serial);
[INFO] [stderr]     |                     --                                                                                                           --
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/cb/mod.rs:173:18
[INFO] [stderr]     |
[INFO] [stderr] 173 |           panic!(format!("count: {} is invalid. size is {}, pos is {}, seqno is {}, serial is {}",count, self.size, pos, seqno, serial));
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 173 |           panic!("count: {} is invalid. size is {}, pos is {}, seqno is {}, serial is {}",count, self.size, pos, seqno, serial);
[INFO] [stderr]     |                 --                                                                                                           --
[INFO] [stderr] 
[INFO] [stderr] warning: `lossyq` (lib) generated 6 warnings
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/cb/tests.rs:144:71
[INFO] [stderr]     |
[INFO] [stderr] 144 |   let c = x.iter().fold(String::new(), |mut acc,x| { acc.push_str(x); (acc) } );
[INFO] [stderr]     |                                                                       ^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `lossyq` (lib test) generated 7 warnings (6 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lossyq-aed275fed76b09d3)
[INFO] [stdout] 
[INFO] [stdout] running 23 tests
[INFO] [stdout] test cb::tests::empty_buffer ... ok
[INFO] [stdout] test cb::tests::iter_empty_i32_5 ... ok
[INFO] [stdout] test cb::tests::iter_full_box_string ... ok
[INFO] [stdout] test cb::tests::add_one ... ok
[INFO] [stdout] test cb::tests::iter_less_str_7 ... ok
[INFO] [stdout] test cb::tests::put_full_str ... ok
[INFO] [stdout] test cb::tests::put_less_i32 ... ok
[INFO] [stdout] test cb::tests::sum_available ... ok
[INFO] [stdout] test spsc::tests::boxed_string_obj ... ok
[INFO] [stdout] test spsc::tests::string_literal ... ok
[INFO] [stdout] test cb::tests::iter_less_str ... ok
[INFO] [stdout] test spsc::tests::with_spawn ... ok
[INFO] [stdout] test spsc::tests::option_i32 ... ok
[INFO] [stdout] test cb::tests::tmp_and_put_i32 ... ok
[INFO] [stdout] test spsc::tests::range ... ok
[INFO] [stdout] test cb::tests::put_overflow_box_string ... ok
[INFO] [stdout] test cb::tests::iter_less_i32 ... ok
[INFO] [stdout] test cb::tests::read_twice ... ok
[INFO] [stdout] test spsc::tests::at_most_once ... ok
[INFO] [stdout] test cb::tests::put_overflow_box_string_3 ... ok
[INFO] [stdout] test cb::tests::iter_overflow_i32 ... ok
[INFO] [stdout] test spsc::tests::pour_test ... ok
[INFO] [stdout] test spsc::tests::no_loss_iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.36s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lossyq
[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" "4cfae34212cac49667e75e20b8859e0b8da7aca01c10342a5ebc39fe0e5b455b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cfae34212cac49667e75e20b8859e0b8da7aca01c10342a5ebc39fe0e5b455b", kill_on_drop: false }`
[INFO] [stdout] 4cfae34212cac49667e75e20b8859e0b8da7aca01c10342a5ebc39fe0e5b455b
