[INFO] cloning repository https://github.com/h-michael/script-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/h-michael/script-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-michael%2Fscript-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-michael%2Fscript-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94507a5b2b1da511eb227c26bf3567ad2dc7cdcb
[INFO] testing h-michael/script-rs against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-michael%2Fscript-rs" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/h-michael/script-rs on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/h-michael/script-rs
[INFO] finished tweaking git repo https://github.com/h-michael/script-rs
[INFO] tweaked toml for git repo https://github.com/h-michael/script-rs written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/h-michael/script-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt v0.2.15
[INFO] [stderr]   Downloaded proc-macro2 v0.4.29
[INFO] [stderr]   Downloaded syn v0.15.33
[INFO] [stderr]   Downloaded nix v0.13.0
[INFO] [stderr]   Downloaded structopt-derive v0.2.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5283db9e4d812b5f0e80bd0362863634b6ab54db3631942a2f3b522362635327
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5283db9e4d812b5f0e80bd0362863634b6ab54db3631942a2f3b522362635327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5283db9e4d812b5f0e80bd0362863634b6ab54db3631942a2f3b522362635327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5283db9e4d812b5f0e80bd0362863634b6ab54db3631942a2f3b522362635327", kill_on_drop: false }`
[INFO] [stdout] 5283db9e4d812b5f0e80bd0362863634b6ab54db3631942a2f3b522362635327
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bec4a8d5d343c4bbacec3aa75923b20c11300873f392ddf5c335cd6cfa96140
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1bec4a8d5d343c4bbacec3aa75923b20c11300873f392ddf5c335cd6cfa96140", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.53
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling structopt v0.2.15
[INFO] [stderr]    Compiling script-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable definition
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stdout]    |                 ----------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 67 |     let master_fd = match master_fd {
[INFO] [stdout]    |         ^^^^^^^^^ unreachable definition
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] note: this expression has type `void::Void`, which is uninhabited
[INFO] [stdout]   --> src/main.rs:58:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable definition
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stdout]    |                 ----------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 67 |     let master_fd = match master_fd {
[INFO] [stdout]    |         ^^^^^^^^^ unreachable definition
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `void::Void`, which is uninhabited
[INFO] [stdout]   --> src/main.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.69s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1bec4a8d5d343c4bbacec3aa75923b20c11300873f392ddf5c335cd6cfa96140", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bec4a8d5d343c4bbacec3aa75923b20c11300873f392ddf5c335cd6cfa96140", kill_on_drop: false }`
[INFO] [stdout] 1bec4a8d5d343c4bbacec3aa75923b20c11300873f392ddf5c335cd6cfa96140
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0037999d272823450d62a64787711be9d460e32635062cdc4da95d358d45fa07
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0037999d272823450d62a64787711be9d460e32635062cdc4da95d358d45fa07", kill_on_drop: false }`
[INFO] [stderr]    Compiling script-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable definition
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stdout]    |                 ----------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 67 |     let master_fd = match master_fd {
[INFO] [stdout]    |         ^^^^^^^^^ unreachable definition
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] note: this expression has type `void::Void`, which is uninhabited
[INFO] [stdout]   --> src/main.rs:58:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable definition
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stdout]    |                 ----------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 67 |     let master_fd = match master_fd {
[INFO] [stdout]    |         ^^^^^^^^^ unreachable definition
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `void::Void`, which is uninhabited
[INFO] [stdout]   --> src/main.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "0037999d272823450d62a64787711be9d460e32635062cdc4da95d358d45fa07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0037999d272823450d62a64787711be9d460e32635062cdc4da95d358d45fa07", kill_on_drop: false }`
[INFO] [stdout] 0037999d272823450d62a64787711be9d460e32635062cdc4da95d358d45fa07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8235764175d96e4e72ebd7b3adbd3fe162b33ad55aeea56013416f4122978afd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8235764175d96e4e72ebd7b3adbd3fe162b33ad55aeea56013416f4122978afd", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unreachable definition
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:67:9
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 58 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stdout] 
[INFO] [stderr]    |                 ----------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 67 |     let master_fd = match master_fd {
[INFO] [stderr]    |         ^^^^^^^^^ unreachable definition
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] note: this expression has type `void::Void`, which is uninhabited
[INFO] [stderr]   --> src/main.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable definition
[INFO] [stderr]   --> src/main.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stderr]    |                 ----------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 67 |     let master_fd = match master_fd {
[INFO] [stderr]    |         ^^^^^^^^^ unreachable definition
[INFO] [stderr]    |
[INFO] [stderr] note: this expression has type `void::Void`, which is uninhabited
[INFO] [stderr]   --> src/main.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 execv(&shell, &[]).expect("can not exec shell");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `script-rs` (bin "script-rs" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/script_rs-a0539a25304776db)
[INFO] running `Command { std: "docker" "inspect" "8235764175d96e4e72ebd7b3adbd3fe162b33ad55aeea56013416f4122978afd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8235764175d96e4e72ebd7b3adbd3fe162b33ad55aeea56013416f4122978afd", kill_on_drop: false }`
[INFO] [stdout] 8235764175d96e4e72ebd7b3adbd3fe162b33ad55aeea56013416f4122978afd