[INFO] fetching crate seahorse 1.1.1...
[INFO] checking seahorse-1.1.1 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate seahorse 1.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate seahorse 1.1.1 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate seahorse 1.1.1
[INFO] finished tweaking crates.io crate seahorse 1.1.1
[INFO] tweaked toml for crates.io crate seahorse 1.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate seahorse 1.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cabec169c3b3ef395aa4e495e9fe5c15140b15eee562ac09a53d9056df86a3f
[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" "6cabec169c3b3ef395aa4e495e9fe5c15140b15eee562ac09a53d9056df86a3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cabec169c3b3ef395aa4e495e9fe5c15140b15eee562ac09a53d9056df86a3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cabec169c3b3ef395aa4e495e9fe5c15140b15eee562ac09a53d9056df86a3f", kill_on_drop: false }`
[INFO] [stdout] 6cabec169c3b3ef395aa4e495e9fe5c15140b15eee562ac09a53d9056df86a3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 601a28bb19b0e49f512970e42d66fa5a283f0dac0b43b2ec4cefbe46b74a42be
[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" "601a28bb19b0e49f512970e42d66fa5a283f0dac0b43b2ec4cefbe46b74a42be", kill_on_drop: false }`
[INFO] [stderr]     Checking seahorse v1.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/app.rs:141:24
[INFO] [stdout]     |
[INFO] [stdout] 141 |                   panic!(format!(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 142 | |                     r#"Command name "{}" is already registered."#,
[INFO] [stdout] 143 | |                     command.name
[INFO] [stdout] 144 | |                 ));
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[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] 141 |                 panic!(
[INFO] [stdout] 142 |                     r#"Command name "{}" is already registered."#,
[INFO] [stdout] 143 |                     command.name
[INFO] [stdout] 144 |                 );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/flag.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |               panic!(format!(
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 51 | |                 r#""{}" is invalid flag name. Flag name cannnot start with "-"."#,
[INFO] [stdout] 52 | |                 name
[INFO] [stdout] 53 | |             ))
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[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] 50 |             panic!(
[INFO] [stdout] 51 |                 r#""{}" is invalid flag name. Flag name cannnot start with "-"."#,
[INFO] [stdout] 52 |                 name
[INFO] [stdout] 53 |             )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/flag.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |               panic!(format!(
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 57 | |                 r#""{}" is invalid flag name. Flag name cannnot contain "="."#,
[INFO] [stdout] 58 | |                 name
[INFO] [stdout] 59 | |             ))
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[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] 56 |             panic!(
[INFO] [stdout] 57 |                 r#""{}" is invalid flag name. Flag name cannnot contain "="."#,
[INFO] [stdout] 58 |                 name
[INFO] [stdout] 59 |             )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/flag.rs:62:20
[INFO] [stdout]    |
[INFO] [stdout] 62 |               panic!(format!(
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 63 | |                 r#""{}" is invalid flag name. Flag name cannnot contain whitespaces."#,
[INFO] [stdout] 64 | |                 name
[INFO] [stdout] 65 | |             ))
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[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] 62 |             panic!(
[INFO] [stdout] 63 |                 r#""{}" is invalid flag name. Flag name cannnot contain whitespaces."#,
[INFO] [stdout] 64 |                 name
[INFO] [stdout] 65 |             )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/app.rs:141:24
[INFO] [stdout]     |
[INFO] [stdout] 141 |                   panic!(format!(
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 142 | |                     r#"Command name "{}" is already registered."#,
[INFO] [stdout] 143 | |                     command.name
[INFO] [stdout] 144 | |                 ));
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[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] 141 |                 panic!(
[INFO] [stdout] 142 |                     r#"Command name "{}" is already registered."#,
[INFO] [stdout] 143 |                     command.name
[INFO] [stdout] 144 |                 );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/flag.rs:50:20
[INFO] [stdout]    |
[INFO] [stdout] 50 |               panic!(format!(
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 51 | |                 r#""{}" is invalid flag name. Flag name cannnot start with "-"."#,
[INFO] [stdout] 52 | |                 name
[INFO] [stdout] 53 | |             ))
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[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] 50 |             panic!(
[INFO] [stdout] 51 |                 r#""{}" is invalid flag name. Flag name cannnot start with "-"."#,
[INFO] [stdout] 52 |                 name
[INFO] [stdout] 53 |             )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/flag.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |               panic!(format!(
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 57 | |                 r#""{}" is invalid flag name. Flag name cannnot contain "="."#,
[INFO] [stdout] 58 | |                 name
[INFO] [stdout] 59 | |             ))
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[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] 56 |             panic!(
[INFO] [stdout] 57 |                 r#""{}" is invalid flag name. Flag name cannnot contain "="."#,
[INFO] [stdout] 58 |                 name
[INFO] [stdout] 59 |             )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/flag.rs:62:20
[INFO] [stdout]    |
[INFO] [stdout] 62 |               panic!(format!(
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 63 | |                 r#""{}" is invalid flag name. Flag name cannnot contain whitespaces."#,
[INFO] [stdout] 64 | |                 name
[INFO] [stdout] 65 | |             ))
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[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] 62 |             panic!(
[INFO] [stdout] 63 |                 r#""{}" is invalid flag name. Flag name cannnot contain whitespaces."#,
[INFO] [stdout] 64 |                 name
[INFO] [stdout] 65 |             )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "601a28bb19b0e49f512970e42d66fa5a283f0dac0b43b2ec4cefbe46b74a42be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "601a28bb19b0e49f512970e42d66fa5a283f0dac0b43b2ec4cefbe46b74a42be", kill_on_drop: false }`
[INFO] [stdout] 601a28bb19b0e49f512970e42d66fa5a283f0dac0b43b2ec4cefbe46b74a42be