[INFO] fetching crate fbs 0.6.0...
[INFO] checking fbs-0.6.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate fbs 0.6.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate fbs 0.6.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fbs 0.6.0
[INFO] finished tweaking crates.io crate fbs 0.6.0
[INFO] tweaked toml for crates.io crate fbs 0.6.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e4576467daa44af261456119edb5280fc8038d8b9e2121e8cb082052fbac0b1
[INFO] running `Command { std: "docker" "start" "-a" "1e4576467daa44af261456119edb5280fc8038d8b9e2121e8cb082052fbac0b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e4576467daa44af261456119edb5280fc8038d8b9e2121e8cb082052fbac0b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4576467daa44af261456119edb5280fc8038d8b9e2121e8cb082052fbac0b1", kill_on_drop: false }`
[INFO] [stdout] 1e4576467daa44af261456119edb5280fc8038d8b9e2121e8cb082052fbac0b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74f55dbf2f96e6436597d44dc40b90b33a3c8aad08aff7b1f8cbbf01ed9ddbd1
[INFO] running `Command { std: "docker" "start" "-a" "74f55dbf2f96e6436597d44dc40b90b33a3c8aad08aff7b1f8cbbf01ed9ddbd1", kill_on_drop: false }`
[INFO] [stderr]     Checking fbs v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::le_safe_slice_impls::*`
[INFO] [stdout]    --> src/vector.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub use self::le_safe_slice_impls::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::le_safe_slice_impls::*`
[INFO] [stdout]    --> src/vector.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub use self::le_safe_slice_impls::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/builder.rs:659:13
[INFO] [stdout]     |
[INFO] [stdout] 659 | /             format!(
[INFO] [stdout] 660 | |                 "incorrect FlatBufferBuilder usage: {} must be called while in a nested state",
[INFO] [stdout] 661 | |                 fn_name
[INFO] [stdout] 662 | |             )
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `debug_assert!()` 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 `debug_assert!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 659 ~             
[INFO] [stdout] 660 |                 "incorrect FlatBufferBuilder usage: {} must be called while in a nested state",
[INFO] [stdout] 661 |                 fn_name
[INFO] [stdout] 662 ~             
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/builder.rs:667:37
[INFO] [stdout]     |
[INFO] [stdout] 667 |         debug_assert!(!self.nested, msg);
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `debug_assert!()` 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] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 667 |         debug_assert!(!self.nested, "{}", msg);
[INFO] [stdout]     |                                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/builder.rs:671:38
[INFO] [stdout]     |
[INFO] [stdout] 671 |         debug_assert!(self.finished, msg);
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `debug_assert!()` 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] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 671 |         debug_assert!(self.finished, "{}", msg);
[INFO] [stdout]     |                                      +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/builder.rs:675:39
[INFO] [stdout]     |
[INFO] [stdout] 675 |         debug_assert!(!self.finished, msg);
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `debug_assert!()` 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] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 675 |         debug_assert!(!self.finished, "{}", msg);
[INFO] [stdout]     |                                       +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/builder.rs:659:13
[INFO] [stdout]     |
[INFO] [stdout] 659 | /             format!(
[INFO] [stdout] 660 | |                 "incorrect FlatBufferBuilder usage: {} must be called while in a nested state",
[INFO] [stdout] 661 | |                 fn_name
[INFO] [stdout] 662 | |             )
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `debug_assert!()` 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 `debug_assert!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 659 ~             
[INFO] [stdout] 660 |                 "incorrect FlatBufferBuilder usage: {} must be called while in a nested state",
[INFO] [stdout] 661 |                 fn_name
[INFO] [stdout] 662 ~             
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/builder.rs:667:37
[INFO] [stdout]     |
[INFO] [stdout] 667 |         debug_assert!(!self.nested, msg);
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `debug_assert!()` 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] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 667 |         debug_assert!(!self.nested, "{}", msg);
[INFO] [stdout]     |                                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/builder.rs:671:38
[INFO] [stdout]     |
[INFO] [stdout] 671 |         debug_assert!(self.finished, msg);
[INFO] [stdout]     |                                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `debug_assert!()` 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] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 671 |         debug_assert!(self.finished, "{}", msg);
[INFO] [stdout]     |                                      +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/builder.rs:675:39
[INFO] [stdout]     |
[INFO] [stdout] 675 |         debug_assert!(!self.finished, msg);
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `debug_assert!()` 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] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 675 |         debug_assert!(!self.finished, "{}", msg);
[INFO] [stdout]     |                                       +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "74f55dbf2f96e6436597d44dc40b90b33a3c8aad08aff7b1f8cbbf01ed9ddbd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74f55dbf2f96e6436597d44dc40b90b33a3c8aad08aff7b1f8cbbf01ed9ddbd1", kill_on_drop: false }`
[INFO] [stdout] 74f55dbf2f96e6436597d44dc40b90b33a3c8aad08aff7b1f8cbbf01ed9ddbd1