[INFO] fetching crate plugin-system 0.1.1...
[INFO] testing plugin-system-0.1.1 against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] extracting crate plugin-system 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate plugin-system 0.1.1
[INFO] finished tweaking crates.io crate plugin-system 0.1.1
[INFO] tweaked toml for crates.io crate plugin-system 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate plugin-system 0.1.1 on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (available: v1.0.106)
[INFO] [stderr]       Adding quote v0.6.13 (available: v1.0.45)
[INFO] [stderr]       Adding syn v0.15.44 (available: v2.0.117)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4deaf3ac7d593b9eca2e0f6cd96873b19754b557076a819f8b1ccdacf2df352a
[INFO] running `Command { std: "docker" "start" "-a" "4deaf3ac7d593b9eca2e0f6cd96873b19754b557076a819f8b1ccdacf2df352a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4deaf3ac7d593b9eca2e0f6cd96873b19754b557076a819f8b1ccdacf2df352a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4deaf3ac7d593b9eca2e0f6cd96873b19754b557076a819f8b1ccdacf2df352a", kill_on_drop: false }`
[INFO] [stdout] 4deaf3ac7d593b9eca2e0f6cd96873b19754b557076a819f8b1ccdacf2df352a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9400602f8631efd83e9966ed02dfd56cce477f0ce2b8797cdba247d65f8ef0e1
[INFO] running `Command { std: "docker" "start" "-a" "9400602f8631efd83e9966ed02dfd56cce477f0ce2b8797cdba247d65f8ef0e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling plugin-system v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/lib.rs:31:53
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(env::VarError::NotUnicode(s)) => panic!(env::VarError::NotUnicode(s)),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(env::VarError::NotUnicode(s)) => panic!("{}", env::VarError::NotUnicode(s)),
[INFO] [stdout]    |                                                     +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 31 -         Err(env::VarError::NotUnicode(s)) => panic!(env::VarError::NotUnicode(s)),
[INFO] [stdout] 31 +         Err(env::VarError::NotUnicode(s)) => std::panic::panic_any(env::VarError::NotUnicode(s)),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:224:21
[INFO] [stdout]     |
[INFO] [stdout] 224 |         _ => panic!(error),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 224 |         _ => panic!("{}", error),
[INFO] [stdout]     |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.23s
[INFO] running `Command { std: "docker" "inspect" "9400602f8631efd83e9966ed02dfd56cce477f0ce2b8797cdba247d65f8ef0e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9400602f8631efd83e9966ed02dfd56cce477f0ce2b8797cdba247d65f8ef0e1", kill_on_drop: false }`
[INFO] [stdout] 9400602f8631efd83e9966ed02dfd56cce477f0ce2b8797cdba247d65f8ef0e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f9b08bd0e6a295abdec84af773ed6ed8ddde3feac2cd79eeea145679d5b45aa
[INFO] running `Command { std: "docker" "start" "-a" "5f9b08bd0e6a295abdec84af773ed6ed8ddde3feac2cd79eeea145679d5b45aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling plugin-system v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/lib.rs:31:53
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(env::VarError::NotUnicode(s)) => panic!(env::VarError::NotUnicode(s)),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(env::VarError::NotUnicode(s)) => panic!("{}", env::VarError::NotUnicode(s)),
[INFO] [stdout]    |                                                     +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 31 -         Err(env::VarError::NotUnicode(s)) => panic!(env::VarError::NotUnicode(s)),
[INFO] [stdout] 31 +         Err(env::VarError::NotUnicode(s)) => std::panic::panic_any(env::VarError::NotUnicode(s)),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:224:21
[INFO] [stdout]     |
[INFO] [stdout] 224 |         _ => panic!(error),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 224 |         _ => panic!("{}", error),
[INFO] [stdout]     |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/lib.rs:31:53
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(env::VarError::NotUnicode(s)) => panic!(env::VarError::NotUnicode(s)),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Err(env::VarError::NotUnicode(s)) => panic!("{}", env::VarError::NotUnicode(s)),
[INFO] [stdout]    |                                                     +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 31 -         Err(env::VarError::NotUnicode(s)) => panic!(env::VarError::NotUnicode(s)),
[INFO] [stdout] 31 +         Err(env::VarError::NotUnicode(s)) => std::panic::panic_any(env::VarError::NotUnicode(s)),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:224:21
[INFO] [stdout]     |
[INFO] [stdout] 224 |         _ => panic!(error),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 224 |         _ => panic!("{}", error),
[INFO] [stdout]     |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "5f9b08bd0e6a295abdec84af773ed6ed8ddde3feac2cd79eeea145679d5b45aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f9b08bd0e6a295abdec84af773ed6ed8ddde3feac2cd79eeea145679d5b45aa", kill_on_drop: false }`
[INFO] [stdout] 5f9b08bd0e6a295abdec84af773ed6ed8ddde3feac2cd79eeea145679d5b45aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 60ed1defe01e291fa731a669e94bfa4d42ec2463c7889721852da846a924e430
[INFO] running `Command { std: "docker" "start" "-a" "60ed1defe01e291fa731a669e94bfa4d42ec2463c7889721852da846a924e430", kill_on_drop: false }`
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/lib.rs:31:53
[INFO] [stderr]    |
[INFO] [stderr] 31 |         Err(env::VarError::NotUnicode(s)) => panic!(env::VarError::NotUnicode(s)),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]    |
[INFO] [stderr] 31 |         Err(env::VarError::NotUnicode(s)) => panic!("{}", env::VarError::NotUnicode(s)),
[INFO] [stderr]    |                                                     +++++
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 31 -         Err(env::VarError::NotUnicode(s)) => panic!(env::VarError::NotUnicode(s)),
[INFO] [stderr] 31 +         Err(env::VarError::NotUnicode(s)) => std::panic::panic_any(env::VarError::NotUnicode(s)),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/lib.rs:224:21
[INFO] [stderr]     |
[INFO] [stderr] 224 |         _ => panic!(error),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]     |
[INFO] [stderr] 224 |         _ => panic!("{}", error),
[INFO] [stderr]     |                     +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `plugin-system` (lib) generated 2 warnings (run `cargo fix --lib -p plugin-system` to apply 2 suggestions)
[INFO] [stderr] warning: `plugin-system` (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/plugin_system-8d4c1f5b5a1db5b4)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests plugin_system
[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] [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" "60ed1defe01e291fa731a669e94bfa4d42ec2463c7889721852da846a924e430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60ed1defe01e291fa731a669e94bfa4d42ec2463c7889721852da846a924e430", kill_on_drop: false }`
[INFO] [stdout] 60ed1defe01e291fa731a669e94bfa4d42ec2463c7889721852da846a924e430
