[INFO] fetching crate format_env 1.0.1...
[INFO] testing format_env-1.0.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate format_env 1.0.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate format_env 1.0.1
[INFO] finished tweaking crates.io crate format_env 1.0.1
[INFO] tweaked toml for crates.io crate format_env 1.0.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate format_env 1.0.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c39fb575b69bfa8c328bc5703f414d386605900ea6508c85d0f53a07c0bba5c2
[INFO] running `Command { std: "docker" "start" "-a" "c39fb575b69bfa8c328bc5703f414d386605900ea6508c85d0f53a07c0bba5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c39fb575b69bfa8c328bc5703f414d386605900ea6508c85d0f53a07c0bba5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c39fb575b69bfa8c328bc5703f414d386605900ea6508c85d0f53a07c0bba5c2", kill_on_drop: false }`
[INFO] [stdout] c39fb575b69bfa8c328bc5703f414d386605900ea6508c85d0f53a07c0bba5c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f3ffcb079ca0a8b6ad17197d31113a5d435d3153b5bfbb28543e28a09ede321
[INFO] running `Command { std: "docker" "start" "-a" "0f3ffcb079ca0a8b6ad17197d31113a5d435d3153b5bfbb28543e28a09ede321", kill_on_drop: false }`
[INFO] [stderr]    Compiling format_env v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/lib.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use proc_macro2::{Literal, TokenStream, TokenTree};
[INFO] [stdout]   |                   ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FromIterator` and `once`
[INFO] [stdout]  --> src/lib.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::{once, FromIterator};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "0f3ffcb079ca0a8b6ad17197d31113a5d435d3153b5bfbb28543e28a09ede321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f3ffcb079ca0a8b6ad17197d31113a5d435d3153b5bfbb28543e28a09ede321", kill_on_drop: false }`
[INFO] [stdout] 0f3ffcb079ca0a8b6ad17197d31113a5d435d3153b5bfbb28543e28a09ede321
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b970ca1b7135c7f8c3bacffd72fd6ad7c281191e44286ab833fec61c5de4a9a3
[INFO] running `Command { std: "docker" "start" "-a" "b970ca1b7135c7f8c3bacffd72fd6ad7c281191e44286ab833fec61c5de4a9a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling format_env v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/lib.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use proc_macro2::{Literal, TokenStream, TokenTree};
[INFO] [stdout]   |                   ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FromIterator` and `once`
[INFO] [stdout]  --> src/lib.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::{once, FromIterator};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/lib.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use proc_macro2::{Literal, TokenStream, TokenTree};
[INFO] [stdout]   |                   ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FromIterator` and `once`
[INFO] [stdout]  --> src/lib.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::{once, FromIterator};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "b970ca1b7135c7f8c3bacffd72fd6ad7c281191e44286ab833fec61c5de4a9a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b970ca1b7135c7f8c3bacffd72fd6ad7c281191e44286ab833fec61c5de4a9a3", kill_on_drop: false }`
[INFO] [stdout] b970ca1b7135c7f8c3bacffd72fd6ad7c281191e44286ab833fec61c5de4a9a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 425d771fc5f1a448f6416f047c9f443d04a95a881897483fa97283c23334a9c5
[INFO] running `Command { std: "docker" "start" "-a" "425d771fc5f1a448f6416f047c9f443d04a95a881897483fa97283c23334a9c5", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Literal`
[INFO] [stderr]  --> src/lib.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use proc_macro2::{Literal, TokenStream, TokenTree};
[INFO] [stderr]   |                   ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FromIterator` and `once`
[INFO] [stderr]  --> src/lib.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::iter::{once, FromIterator};
[INFO] [stderr]   |                 ^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `format_env` (lib) generated 2 warnings (run `cargo fix --lib -p format_env` to apply 2 suggestions)
[INFO] [stderr] warning: `format_env` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/format_env-a70015c57f046d40)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test tests::test_escape ... ok
[INFO] [stdout] test tests::test_no_substitution ... ok
[INFO] [stdout] test tests::test_raw_string ... ok
[INFO] [stdout] test tests::test_substitution ... ok
[INFO] [stdout] test tests::test_reject_ident - should panic ... ok
[INFO] [stdout] test tests::test_reject_group - should panic ... ok
[INFO] [stdout] test tests::test_reject_number - should panic ... ok
[INFO] [stdout] test tests::test_reject_punct - should panic ... ok
[INFO] [stdout] test tests::test_reject_two_tokens - should panic ... ok
[INFO] [stdout] test tests::test_reject_unmatched - should panic ... ok
[INFO] [stdout] test tests::test_reject_zero_tokens - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests format_env
[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" "425d771fc5f1a448f6416f047c9f443d04a95a881897483fa97283c23334a9c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "425d771fc5f1a448f6416f047c9f443d04a95a881897483fa97283c23334a9c5", kill_on_drop: false }`
[INFO] [stdout] 425d771fc5f1a448f6416f047c9f443d04a95a881897483fa97283c23334a9c5