[INFO] cloning repository https://github.com/Mistodon/piggy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mistodon/piggy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMistodon%2Fpiggy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMistodon%2Fpiggy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8bf28380a3c451544c80b89df891a5556e44e448
[INFO] testing Mistodon/piggy against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMistodon%2Fpiggy" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Mistodon/piggy on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Mistodon/piggy
[INFO] finished tweaking git repo https://github.com/Mistodon/piggy
[INFO] tweaked toml for git repo https://github.com/Mistodon/piggy written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Mistodon/piggy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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 atty v0.2.3
[INFO] [stderr]   Downloaded serde_yaml v0.7.1
[INFO] [stderr]   Downloaded num v0.1.40
[INFO] [stderr]   Downloaded libc v0.2.33
[INFO] [stderr]   Downloaded clap v2.27.1
[INFO] [stderr]   Downloaded structopt v0.1.4
[INFO] [stderr]   Downloaded structopt-derive v0.1.4
[INFO] [stderr]   Downloaded serde_derive v1.0.18
[INFO] [stderr]   Downloaded serde v1.0.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c6829755426a305a6db2d8d5ce9eaca64f13e42cdf9299c62e530a08ab38290
[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" "8c6829755426a305a6db2d8d5ce9eaca64f13e42cdf9299c62e530a08ab38290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c6829755426a305a6db2d8d5ce9eaca64f13e42cdf9299c62e530a08ab38290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c6829755426a305a6db2d8d5ce9eaca64f13e42cdf9299c62e530a08ab38290", kill_on_drop: false }`
[INFO] [stdout] 8c6829755426a305a6db2d8d5ce9eaca64f13e42cdf9299c62e530a08ab38290
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31c40272e093f8e85d352ef646ec560f3b1107e2afd0d4619726a308b775ee27
[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" "31c40272e093f8e85d352ef646ec560f3b1107e2afd0d4619726a308b775ee27", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling serde v1.0.18
[INFO] [stderr]    Compiling linked-hash-map v0.4.2
[INFO] [stderr]    Compiling ansi_term v0.10.2
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]    Compiling structopt-derive v0.1.4
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling atty v0.2.3
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling serde_derive v1.0.18
[INFO] [stderr]    Compiling clap v2.27.1
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stderr]    Compiling num v0.1.40
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling serde_yaml v0.7.1
[INFO] [stderr]    Compiling structopt v0.1.4
[INFO] [stderr]    Compiling piggy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromStr` is imported redundantly
[INFO] [stdout]   --> src/data.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::str::FromStr;
[INFO] [stdout]    |     ----------------- the item `FromStr` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 42 |         use std::str::FromStr;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior is unexpected and probably not what you want. Consider using a crate from crates.io instead.
[INFO] [stdout]    --> src/main.rs:135:45
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 let mut home = expect!(env::home_dir(), "Failed to find home directory");
[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 42.83s
[INFO] running `Command { std: "docker" "inspect" "31c40272e093f8e85d352ef646ec560f3b1107e2afd0d4619726a308b775ee27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31c40272e093f8e85d352ef646ec560f3b1107e2afd0d4619726a308b775ee27", kill_on_drop: false }`
[INFO] [stdout] 31c40272e093f8e85d352ef646ec560f3b1107e2afd0d4619726a308b775ee27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98bfec9bada08da684aadee1a96b034c9c154638b4184b44ee52d32f23eb7b9c
[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" "98bfec9bada08da684aadee1a96b034c9c154638b4184b44ee52d32f23eb7b9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling piggy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromStr` is imported redundantly
[INFO] [stdout]   --> src/data.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::str::FromStr;
[INFO] [stdout]    |     ----------------- the item `FromStr` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 42 |         use std::str::FromStr;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromStr` is imported redundantly
[INFO] [stdout]   --> src/data.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::str::FromStr;
[INFO] [stdout]    |     ----------------- the item `FromStr` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 42 |         use std::str::FromStr;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior is unexpected and probably not what you want. Consider using a crate from crates.io instead.
[INFO] [stdout]    --> src/main.rs:135:45
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 let mut home = expect!(env::home_dir(), "Failed to find home directory");
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.41s
[INFO] running `Command { std: "docker" "inspect" "98bfec9bada08da684aadee1a96b034c9c154638b4184b44ee52d32f23eb7b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98bfec9bada08da684aadee1a96b034c9c154638b4184b44ee52d32f23eb7b9c", kill_on_drop: false }`
[INFO] [stdout] 98bfec9bada08da684aadee1a96b034c9c154638b4184b44ee52d32f23eb7b9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f683d82a16542439534afd35c5289b9d3f0ebd65c18fa023bd71d33ff1f79dc9
[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" "f683d82a16542439534afd35c5289b9d3f0ebd65c18fa023bd71d33ff1f79dc9", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: the item `FromStr` is imported redundantly
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/data.rs:42:13
[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] 1  | use std::str::FromStr;
[INFO] [stdout] 
[INFO] [stderr]    |     ----------------- the item `FromStr` is already imported here
[INFO] [stdout] 
[INFO] [stderr] ...
[INFO] [stdout] running 0 tests
[INFO] [stderr] 42 |         use std::str::FromStr;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `piggy` (lib) generated 1 warning
[INFO] [stderr] warning: `piggy` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: use of deprecated function `std::env::home_dir`: This function's behavior is unexpected and probably not what you want. Consider using a crate from crates.io instead.
[INFO] [stderr]    --> src/main.rs:135:45
[INFO] [stderr]     |
[INFO] [stderr] 135 |                 let mut home = expect!(env::home_dir(), "Failed to find home directory");
[INFO] [stderr]     |                                             ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `piggy` (bin "piggy" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/piggy-228763829bd0a740)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/piggy-0b617fb527d49822)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests piggy
[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" "f683d82a16542439534afd35c5289b9d3f0ebd65c18fa023bd71d33ff1f79dc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f683d82a16542439534afd35c5289b9d3f0ebd65c18fa023bd71d33ff1f79dc9", kill_on_drop: false }`
[INFO] [stdout] f683d82a16542439534afd35c5289b9d3f0ebd65c18fa023bd71d33ff1f79dc9