[INFO] cloning repository https://github.com/BurntSushi/rust-cmail
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BurntSushi/rust-cmail" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBurntSushi%2Frust-cmail", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBurntSushi%2Frust-cmail'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64ff384418099dc824f93488876b9503791e327e
[INFO] testing BurntSushi/rust-cmail against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBurntSushi%2Frust-cmail" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BurntSushi/rust-cmail on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BurntSushi/rust-cmail
[INFO] finished tweaking git repo https://github.com/BurntSushi/rust-cmail
[INFO] tweaked toml for git repo https://github.com/BurntSushi/rust-cmail written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/BurntSushi/rust-cmail already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95e1edabfd23fc21c71f49e537ad859f2699c20e5426743bfd591137b1adffb7
[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" "95e1edabfd23fc21c71f49e537ad859f2699c20e5426743bfd591137b1adffb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95e1edabfd23fc21c71f49e537ad859f2699c20e5426743bfd591137b1adffb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95e1edabfd23fc21c71f49e537ad859f2699c20e5426743bfd591137b1adffb7", kill_on_drop: false }`
[INFO] [stdout] 95e1edabfd23fc21c71f49e537ad859f2699c20e5426743bfd591137b1adffb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 116cd84cb1db173f7f6c6b354ba917768f51e9ab95c20f1a8a32866a183c3856
[INFO] running `Command { std: "docker" "start" "-a" "116cd84cb1db173f7f6c6b354ba917768f51e9ab95c20f1a8a32866a183c3856", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v1.0.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.0
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.4.1
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling arc-swap v0.2.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]    Compiling aho-corasick v0.6.6
[INFO] [stderr]    Compiling smallvec v0.6.3
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling signal-hook v0.1.2
[INFO] [stderr]    Compiling rand v0.5.4
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.1
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.5.5
[INFO] [stderr]    Compiling syn v0.14.5
[INFO] [stderr]    Compiling crossbeam-channel v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]    Compiling docopt v1.0.0
[INFO] [stderr]    Compiling cmail v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> cmail.rs:50:47
[INFO] [stdout]    |
[INFO] [stdout] 50 | type Result<T> = ::std::result::Result<T, Box<Error + Send + Sync>>;
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> cmail.rs:369:25
[INFO] [stdout]     |
[INFO] [stdout] 369 |     fn wtr(self) -> Box<io::Write> {
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.08s
[INFO] running `Command { std: "docker" "inspect" "116cd84cb1db173f7f6c6b354ba917768f51e9ab95c20f1a8a32866a183c3856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "116cd84cb1db173f7f6c6b354ba917768f51e9ab95c20f1a8a32866a183c3856", kill_on_drop: false }`
[INFO] [stdout] 116cd84cb1db173f7f6c6b354ba917768f51e9ab95c20f1a8a32866a183c3856
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7c9a993f961e8ecbe4e9b7ebc99256fe4c63ddfb885adf9ee3338d6760a2e08
[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" "e7c9a993f961e8ecbe4e9b7ebc99256fe4c63ddfb885adf9ee3338d6760a2e08", kill_on_drop: false }`
[INFO] [stderr]    Compiling cmail v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> cmail.rs:50:47
[INFO] [stdout]    |
[INFO] [stdout] 50 | type Result<T> = ::std::result::Result<T, Box<Error + Send + Sync>>;
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> cmail.rs:369:25
[INFO] [stdout]     |
[INFO] [stdout] 369 |     fn wtr(self) -> Box<io::Write> {
[INFO] [stdout]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "e7c9a993f961e8ecbe4e9b7ebc99256fe4c63ddfb885adf9ee3338d6760a2e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7c9a993f961e8ecbe4e9b7ebc99256fe4c63ddfb885adf9ee3338d6760a2e08", kill_on_drop: false }`
[INFO] [stdout] e7c9a993f961e8ecbe4e9b7ebc99256fe4c63ddfb885adf9ee3338d6760a2e08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1c1e9ed93302ae197e7e94fccc00fd5b2af114f44b74510ec388566b28525535
[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" "1c1e9ed93302ae197e7e94fccc00fd5b2af114f44b74510ec388566b28525535", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> cmail.rs:50:47
[INFO] [stderr]    |
[INFO] [stderr] 50 | type Result<T> = ::std::result::Result<T, Box<Error + Send + Sync>>;
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send + Sync`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> cmail.rs:369:25
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn wtr(self) -> Box<io::Write> {
[INFO] [stderr]     |                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cmail-6a16874b7b8ba7bc
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1c1e9ed93302ae197e7e94fccc00fd5b2af114f44b74510ec388566b28525535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c1e9ed93302ae197e7e94fccc00fd5b2af114f44b74510ec388566b28525535", kill_on_drop: false }`
[INFO] [stdout] 1c1e9ed93302ae197e7e94fccc00fd5b2af114f44b74510ec388566b28525535