[INFO] fetching crate minimal-yaml 0.1.5...
[INFO] checking minimal-yaml-0.1.5 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate minimal-yaml 0.1.5 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate minimal-yaml 0.1.5
[INFO] finished tweaking crates.io crate minimal-yaml 0.1.5
[INFO] tweaked toml for crates.io crate minimal-yaml 0.1.5 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate minimal-yaml 0.1.5 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] [stderr]       Adding paste v0.1.18 (available: v1.0.15)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1f5de9ab938e29dc63b7ed04a053f3bf2e40a6bf61587fa7bdd41c85ab5743e
[INFO] running `Command { std: "docker" "start" "-a" "a1f5de9ab938e29dc63b7ed04a053f3bf2e40a6bf61587fa7bdd41c85ab5743e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1f5de9ab938e29dc63b7ed04a053f3bf2e40a6bf61587fa7bdd41c85ab5743e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1f5de9ab938e29dc63b7ed04a053f3bf2e40a6bf61587fa7bdd41c85ab5743e", kill_on_drop: false }`
[INFO] [stdout] a1f5de9ab938e29dc63b7ed04a053f3bf2e40a6bf61587fa7bdd41c85ab5743e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae85be556c224d739094edca401259ed3d30b7c487512d10f232f19be9ad4bbc
[INFO] running `Command { std: "docker" "start" "-a" "ae85be556c224d739094edca401259ed3d30b7c487512d10f232f19be9ad4bbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking minimal-yaml v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `FlowOut` is never constructed
[INFO] [stdout]   --> src/parse.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub(crate) enum ParseContext {
[INFO] [stdout]    |                 ------------ variant in this enum
[INFO] [stdout] 19 |     FlowIn,
[INFO] [stdout] 20 |     FlowOut,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseContext` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parse.rs:213:37
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 byt => unreachable!(format!("unexpected {:?}", byt.map(char::from))),
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `unreachable!()` 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] 213 -                 byt => unreachable!(format!("unexpected {:?}", byt.map(char::from))),
[INFO] [stdout] 213 +                 byt => unreachable!("unexpected {:?}", byt.map(char::from)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stdout] warning: variant `FlowOut` is never constructed
[INFO] [stdout]   --> src/parse.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub(crate) enum ParseContext {
[INFO] [stdout]    |                 ------------ variant in this enum
[INFO] [stdout] 19 |     FlowIn,
[INFO] [stdout] 20 |     FlowOut,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseContext` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parse.rs:213:37
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 byt => unreachable!(format!("unexpected {:?}", byt.map(char::from))),
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `unreachable!()` 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] 213 -                 byt => unreachable!(format!("unexpected {:?}", byt.map(char::from))),
[INFO] [stdout] 213 +                 byt => unreachable!("unexpected {:?}", byt.map(char::from)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.80s
[INFO] running `Command { std: "docker" "inspect" "ae85be556c224d739094edca401259ed3d30b7c487512d10f232f19be9ad4bbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae85be556c224d739094edca401259ed3d30b7c487512d10f232f19be9ad4bbc", kill_on_drop: false }`
[INFO] [stdout] ae85be556c224d739094edca401259ed3d30b7c487512d10f232f19be9ad4bbc