[INFO] fetching crate tmux_min_attacher 1.0.0...
[INFO] testing tmux_min_attacher-1.0.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate tmux_min_attacher 1.0.0 into /workspace/builds/worker-106/source
[INFO] validating manifest of crates.io crate tmux_min_attacher 1.0.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-106/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3cccdfd5058fe9f8c0d7eadbc2f1d3be7de943a5419583e36c3d68bedd324a8
[INFO] running `Command { std: "docker" "start" "-a" "e3cccdfd5058fe9f8c0d7eadbc2f1d3be7de943a5419583e36c3d68bedd324a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3cccdfd5058fe9f8c0d7eadbc2f1d3be7de943a5419583e36c3d68bedd324a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3cccdfd5058fe9f8c0d7eadbc2f1d3be7de943a5419583e36c3d68bedd324a8", kill_on_drop: false }`
[INFO] [stdout] e3cccdfd5058fe9f8c0d7eadbc2f1d3be7de943a5419583e36c3d68bedd324a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f1f3ed37fc243c3db4ed581572ba8d1d99a0f7804c12fecb8cd95b6b80a2d03
[INFO] running `Command { std: "docker" "start" "-a" "6f1f3ed37fc243c3db4ed581572ba8d1d99a0f7804c12fecb8cd95b6b80a2d03", 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 4.95s
[INFO] running `Command { std: "docker" "inspect" "6f1f3ed37fc243c3db4ed581572ba8d1d99a0f7804c12fecb8cd95b6b80a2d03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f1f3ed37fc243c3db4ed581572ba8d1d99a0f7804c12fecb8cd95b6b80a2d03", kill_on_drop: false }`
[INFO] [stdout] 6f1f3ed37fc243c3db4ed581572ba8d1d99a0f7804c12fecb8cd95b6b80a2d03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72b6db704bf317ebcab71e9c078cfa2c4b0f02663b38af1482e3476d54ecc449
[INFO] running `Command { std: "docker" "start" "-a" "72b6db704bf317ebcab71e9c078cfa2c4b0f02663b38af1482e3476d54ecc449", 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 0.50s
[INFO] running `Command { std: "docker" "inspect" "72b6db704bf317ebcab71e9c078cfa2c4b0f02663b38af1482e3476d54ecc449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72b6db704bf317ebcab71e9c078cfa2c4b0f02663b38af1482e3476d54ecc449", kill_on_drop: false }`
[INFO] [stdout] 72b6db704bf317ebcab71e9c078cfa2c4b0f02663b38af1482e3476d54ecc449
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8660e92c90c26049521813ba2ff2235ec85e3328d0f4e59759e88df9db5deab2
[INFO] running `Command { std: "docker" "start" "-a" "8660e92c90c26049521813ba2ff2235ec85e3328d0f4e59759e88df9db5deab2", 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 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tmux_min_attacher-5cd6158d0266443a)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_detached_sessions ... ok
[INFO] [stdout] test test_session_number_with_attached_session ... 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 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8660e92c90c26049521813ba2ff2235ec85e3328d0f4e59759e88df9db5deab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8660e92c90c26049521813ba2ff2235ec85e3328d0f4e59759e88df9db5deab2", kill_on_drop: false }`
[INFO] [stdout] 8660e92c90c26049521813ba2ff2235ec85e3328d0f4e59759e88df9db5deab2