[INFO] cloning repository https://github.com/chazelton331/synthetic_checker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chazelton331/synthetic_checker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchazelton331%2Fsynthetic_checker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchazelton331%2Fsynthetic_checker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 574fb38b7ff009b413f0b46f37211d39055f460a
[INFO] testing chazelton331/synthetic_checker against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchazelton331%2Fsynthetic_checker" "/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/chazelton331/synthetic_checker on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chazelton331/synthetic_checker
[INFO] finished tweaking git repo https://github.com/chazelton331/synthetic_checker
[INFO] tweaked toml for git repo https://github.com/chazelton331/synthetic_checker written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/chazelton331/synthetic_checker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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 tokio-macros v0.2.5
[INFO] [stderr]   Downloaded wasi v0.9.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded rand_hc v0.2.0
[INFO] [stderr]   Downloaded schannel v0.1.19
[INFO] [stderr]   Downloaded pin-project-lite v0.1.7
[INFO] [stderr]   Downloaded socket2 v0.3.12
[INFO] [stderr]   Downloaded proc-macro2 v1.0.19
[INFO] [stderr]   Downloaded core-foundation v0.7.0
[INFO] [stderr]   Downloaded try-lock v0.2.3
[INFO] [stderr]   Downloaded hyper v0.13.7
[INFO] [stderr]   Downloaded itoa v0.4.6
[INFO] [stderr]   Downloaded futures-channel v0.3.5
[INFO] [stderr]   Downloaded futures-task v0.3.5
[INFO] [stderr]   Downloaded futures-sink v0.3.5
[INFO] [stderr]   Downloaded tracing-core v0.1.11
[INFO] [stderr]   Downloaded http-body v0.3.1
[INFO] [stderr]   Downloaded lazy_static v1.4.0
[INFO] [stderr]   Downloaded rand_core v0.5.1
[INFO] [stderr]   Downloaded remove_dir_all v0.5.3
[INFO] [stderr]   Downloaded tempfile v3.1.0
[INFO] [stderr]   Downloaded time v0.1.43
[INFO] [stderr]   Downloaded pin-project-internal v0.4.23
[INFO] [stderr]   Downloaded indexmap v1.5.0
[INFO] [stderr]   Downloaded pin-utils v0.1.0
[INFO] [stderr]   Downloaded autocfg v1.0.0
[INFO] [stderr]   Downloaded httparse v1.3.4
[INFO] [stderr]   Downloaded bytes v0.5.6
[INFO] [stderr]   Downloaded pkg-config v0.3.18
[INFO] [stderr]   Downloaded hashbrown v0.8.1
[INFO] [stderr]   Downloaded vcpkg v0.2.10
[INFO] [stderr]   Downloaded tokio-util v0.3.1
[INFO] [stderr]   Downloaded rand v0.7.3
[INFO] [stderr]   Downloaded foreign-types v0.3.2
[INFO] [stderr]   Downloaded futures-util v0.3.5
[INFO] [stderr]   Downloaded winapi v0.3.9
[INFO] [stderr]   Downloaded libc v0.2.73
[INFO] [stderr]   Downloaded openssl-sys v0.9.58
[INFO] [stderr]   Downloaded h2 v0.2.6
[INFO] [stderr]   Downloaded net2 v0.2.34
[INFO] [stderr]   Downloaded openssl v0.10.30
[INFO] [stderr]   Downloaded syn v1.0.36
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded foreign-types-shared v0.1.1
[INFO] [stderr]   Downloaded mio v0.6.22
[INFO] [stderr]   Downloaded rand_chacha v0.2.2
[INFO] [stderr]   Downloaded fnv v1.0.7
[INFO] [stderr]   Downloaded slab v0.4.2
[INFO] [stderr]   Downloaded bitflags v1.2.1
[INFO] [stderr]   Downloaded iovec v0.1.4
[INFO] [stderr]   Downloaded tower-service v0.3.0
[INFO] [stderr]   Downloaded tokio-tls v0.3.1
[INFO] [stderr]   Downloaded hyper-tls v0.4.3
[INFO] [stderr]   Downloaded cc v1.0.58
[INFO] [stderr]   Downloaded security-framework v0.4.4
[INFO] [stderr]   Downloaded core-foundation-sys v0.7.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.8
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded tokio v0.2.22
[INFO] [stderr]   Downloaded redox_syscall v0.1.57
[INFO] [stderr]   Downloaded futures-core v0.3.5
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.3.3
[INFO] [stderr]   Downloaded unicode-xid v0.2.1
[INFO] [stderr]   Downloaded cfg-if v0.1.10
[INFO] [stderr]   Downloaded openssl-probe v0.1.2
[INFO] [stderr]   Downloaded native-tls v0.2.4
[INFO] [stderr]   Downloaded memchr v2.3.3
[INFO] [stderr]   Downloaded fuchsia-zircon v0.3.3
[INFO] [stderr]   Downloaded log v0.4.11
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded ws2_32-sys v0.2.1
[INFO] [stderr]   Downloaded miow v0.2.1
[INFO] [stderr]   Downloaded quote v1.0.7
[INFO] [stderr]   Downloaded http v0.2.1
[INFO] [stderr]   Downloaded winapi-i686-pc-windows-gnu v0.4.0
[INFO] [stderr]   Downloaded security-framework-sys v0.4.3
[INFO] [stderr]   Downloaded tracing v0.1.17
[INFO] [stderr]   Downloaded want v0.3.0
[INFO] [stderr]   Downloaded winapi-x86_64-pc-windows-gnu v0.4.0
[INFO] [stderr]   Downloaded pin-project v0.4.23
[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" "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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 928f05903364807069c89315e6cc2581b4d88a2e63755a399c7bacb25a560271
[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" "928f05903364807069c89315e6cc2581b4d88a2e63755a399c7bacb25a560271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "928f05903364807069c89315e6cc2581b4d88a2e63755a399c7bacb25a560271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "928f05903364807069c89315e6cc2581b4d88a2e63755a399c7bacb25a560271", kill_on_drop: false }`
[INFO] [stdout] 928f05903364807069c89315e6cc2581b4d88a2e63755a399c7bacb25a560271
[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" "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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 7d79bdf062bc5b316b0d46c9dd13ddb3c144ca2303ab471371ee610e8c4b518e
[INFO] running `Command { std: "docker" "start" "-a" "7d79bdf062bc5b316b0d46c9dd13ddb3c144ca2303ab471371ee610e8c4b518e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]    Compiling tracing-core v0.1.11
[INFO] [stderr]    Compiling tracing v0.1.17
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tls v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.6
[INFO] [stderr]    Compiling hyper v0.13.7
[INFO] [stderr]    Compiling hyper-tls v0.4.3
[INFO] [stderr]    Compiling synthetic_checker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     get_example();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "7d79bdf062bc5b316b0d46c9dd13ddb3c144ca2303ab471371ee610e8c4b518e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d79bdf062bc5b316b0d46c9dd13ddb3c144ca2303ab471371ee610e8c4b518e", kill_on_drop: false }`
[INFO] [stdout] 7d79bdf062bc5b316b0d46c9dd13ddb3c144ca2303ab471371ee610e8c4b518e
[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" "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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b3a50ef01780392eba39d7bcc6f03ee9a29efd3e1bb67599ddf5e3dc2329693
[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" "8b3a50ef01780392eba39d7bcc6f03ee9a29efd3e1bb67599ddf5e3dc2329693", kill_on_drop: false }`
[INFO] [stderr]    Compiling synthetic_checker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     get_example();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "8b3a50ef01780392eba39d7bcc6f03ee9a29efd3e1bb67599ddf5e3dc2329693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b3a50ef01780392eba39d7bcc6f03ee9a29efd3e1bb67599ddf5e3dc2329693", kill_on_drop: false }`
[INFO] [stdout] 8b3a50ef01780392eba39d7bcc6f03ee9a29efd3e1bb67599ddf5e3dc2329693
[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" "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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 34976e331820c026de3217834c97b4a1443b73fe7894a6bab7039577e3113b16
[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" "34976e331820c026de3217834c97b4a1443b73fe7894a6bab7039577e3113b16", kill_on_drop: false }`
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     get_example();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/synthetic_checker-38770110f875938c
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::todo_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "34976e331820c026de3217834c97b4a1443b73fe7894a6bab7039577e3113b16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34976e331820c026de3217834c97b4a1443b73fe7894a6bab7039577e3113b16", kill_on_drop: false }`
[INFO] [stdout] 34976e331820c026de3217834c97b4a1443b73fe7894a6bab7039577e3113b16