[INFO] fetching crate tmux_min_attacher 1.0.0...
[INFO] testing tmux_min_attacher-1.0.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate tmux_min_attacher 1.0.0 into /workspace/builds/worker-60/source
[INFO] validating manifest of crates.io crate tmux_min_attacher 1.0.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tmux_min_attacher 1.0.0
[INFO] finished tweaking crates.io crate tmux_min_attacher 1.0.0
[INFO] tweaked toml for crates.io crate tmux_min_attacher 1.0.0 written to /workspace/builds/worker-60/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43a65e3b12ec8b1329519a9978ebd5a987f3b9b66ac5bd4c433cf26eb8100d54
[INFO] running `Command { std: "docker" "start" "-a" "43a65e3b12ec8b1329519a9978ebd5a987f3b9b66ac5bd4c433cf26eb8100d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43a65e3b12ec8b1329519a9978ebd5a987f3b9b66ac5bd4c433cf26eb8100d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43a65e3b12ec8b1329519a9978ebd5a987f3b9b66ac5bd4c433cf26eb8100d54", kill_on_drop: false }`
[INFO] [stdout] 43a65e3b12ec8b1329519a9978ebd5a987f3b9b66ac5bd4c433cf26eb8100d54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 281be22a5c55c541e6de08458484cf4074814ea1bad50a5069ffbd51c6adfa93
[INFO] running `Command { std: "docker" "start" "-a" "281be22a5c55c541e6de08458484cf4074814ea1bad50a5069ffbd51c6adfa93", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling tmux_min_attacher v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:44:64
[INFO] [stdout]    |
[INFO] [stdout] 44 |             println!("execvp of {:?} failed: {:?}", program, e.description());
[INFO] [stdout]    |                                                                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.23s
[INFO] running `Command { std: "docker" "inspect" "281be22a5c55c541e6de08458484cf4074814ea1bad50a5069ffbd51c6adfa93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "281be22a5c55c541e6de08458484cf4074814ea1bad50a5069ffbd51c6adfa93", kill_on_drop: false }`
[INFO] [stdout] 281be22a5c55c541e6de08458484cf4074814ea1bad50a5069ffbd51c6adfa93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82275904f4a6dac65874d987203fde06343dc6629b4a0c0318641cd7a6df62ea
[INFO] running `Command { std: "docker" "start" "-a" "82275904f4a6dac65874d987203fde06343dc6629b4a0c0318641cd7a6df62ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling tmux_min_attacher v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:44:64
[INFO] [stdout]    |
[INFO] [stdout] 44 |             println!("execvp of {:?} failed: {:?}", program, e.description());
[INFO] [stdout]    |                                                                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:94:27
[INFO] [stdout]    |
[INFO] [stdout] 94 |         Some(n) => panic!(format!("Should have returned 11, got {}!", n)),
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[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/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[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] 94 -         Some(n) => panic!(format!("Should have returned 11, got {}!", n)),
[INFO] [stdout] 94 +         Some(n) => panic!("Should have returned 11, got {}!", n),
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:102:27
[INFO] [stdout]     |
[INFO] [stdout] 102 |         Some(n) => panic!(format!("Should have returned None, got {}!", n)),
[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/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[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] 102 -         Some(n) => panic!(format!("Should have returned None, got {}!", n)),
[INFO] [stdout] 102 +         Some(n) => panic!("Should have returned None, got {}!", n),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:110:27
[INFO] [stdout]     |
[INFO] [stdout] 110 |         Some(n) => panic!(format!("Should have returned None, got {}!", n)),
[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/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[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] 110 -         Some(n) => panic!(format!("Should have returned None, got {}!", n)),
[INFO] [stdout] 110 +         Some(n) => panic!("Should have returned None, got {}!", n),
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "82275904f4a6dac65874d987203fde06343dc6629b4a0c0318641cd7a6df62ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82275904f4a6dac65874d987203fde06343dc6629b4a0c0318641cd7a6df62ea", kill_on_drop: false }`
[INFO] [stdout] 82275904f4a6dac65874d987203fde06343dc6629b4a0c0318641cd7a6df62ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8758f473cc9dab02fe3a6e309fca1c52c9dcd004cd33c86a214602c04ade6c54
[INFO] running `Command { std: "docker" "start" "-a" "8758f473cc9dab02fe3a6e309fca1c52c9dcd004cd33c86a214602c04ade6c54", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:44:64
[INFO] [stderr]    |
[INFO] [stderr] 44 |             println!("execvp of {:?} failed: {:?}", program, e.description());
[INFO] [stderr]    |                                                                ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/main.rs:94:27
[INFO] [stderr]    |
[INFO] [stderr] 94 |         Some(n) => panic!(format!("Should have returned 11, got {}!", n)),
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[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/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]    |
[INFO] [stderr] 94 -         Some(n) => panic!(format!("Should have returned 11, got {}!", n)),
[INFO] [stderr] 94 +         Some(n) => panic!("Should have returned 11, got {}!", n),
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/main.rs:102:27
[INFO] [stderr]     |
[INFO] [stderr] 102 |         Some(n) => panic!(format!("Should have returned None, got {}!", n)),
[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/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 102 -         Some(n) => panic!(format!("Should have returned None, got {}!", n)),
[INFO] [stderr] 102 +         Some(n) => panic!("Should have returned None, got {}!", n),
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/main.rs:110:27
[INFO] [stderr]     |
[INFO] [stderr] 110 |         Some(n) => panic!(format!("Should have returned None, got {}!", n)),
[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/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 110 -         Some(n) => panic!(format!("Should have returned None, got {}!", n)),
[INFO] [stderr] 110 +         Some(n) => panic!("Should have returned None, got {}!", n),
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `tmux_min_attacher` (bin "tmux_min_attacher" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tmux_min_attacher-5cd6158d0266443a)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_session_number_with_attached_session ... ok
[INFO] [stdout] test test_detached_sessions ... ok
[INFO] [stdout] test test_session_number_with_numbers ... ok
[INFO] [stdout] test test_session_number_with_strings ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8758f473cc9dab02fe3a6e309fca1c52c9dcd004cd33c86a214602c04ade6c54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8758f473cc9dab02fe3a6e309fca1c52c9dcd004cd33c86a214602c04ade6c54", kill_on_drop: false }`
[INFO] [stdout] 8758f473cc9dab02fe3a6e309fca1c52c9dcd004cd33c86a214602c04ade6c54