[INFO] fetching crate lsm303c 0.2.0...
[INFO] testing lsm303c-0.2.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate lsm303c 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate lsm303c 0.2.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lsm303c 0.2.0
[INFO] finished tweaking crates.io crate lsm303c 0.2.0
[INFO] tweaked toml for crates.io crate lsm303c 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f26d9e5af7aa69db7e435dbed3bae28d0d9009531f43fcd4912e100efd4cbe9
[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" "7f26d9e5af7aa69db7e435dbed3bae28d0d9009531f43fcd4912e100efd4cbe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f26d9e5af7aa69db7e435dbed3bae28d0d9009531f43fcd4912e100efd4cbe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f26d9e5af7aa69db7e435dbed3bae28d0d9009531f43fcd4912e100efd4cbe9", kill_on_drop: false }`
[INFO] [stdout] 7f26d9e5af7aa69db7e435dbed3bae28d0d9009531f43fcd4912e100efd4cbe9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1be8eb77d4cc41d185c4359972c4fb62ad52593763929f7af845ebe6096040a7
[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" "1be8eb77d4cc41d185c4359972c4fb62ad52593763929f7af845ebe6096040a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling lsm303c v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "1be8eb77d4cc41d185c4359972c4fb62ad52593763929f7af845ebe6096040a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1be8eb77d4cc41d185c4359972c4fb62ad52593763929f7af845ebe6096040a7", kill_on_drop: false }`
[INFO] [stdout] 1be8eb77d4cc41d185c4359972c4fb62ad52593763929f7af845ebe6096040a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54c0be35720888111dc4d458f0856a19486926866809a10ac855304799a2d193
[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" "54c0be35720888111dc4d458f0856a19486926866809a10ac855304799a2d193", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lsm303c v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "54c0be35720888111dc4d458f0856a19486926866809a10ac855304799a2d193", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54c0be35720888111dc4d458f0856a19486926866809a10ac855304799a2d193", kill_on_drop: false }`
[INFO] [stdout] 54c0be35720888111dc4d458f0856a19486926866809a10ac855304799a2d193
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d1e6ac012439c8c8c163f1391fd8637319d9cd916d8959780621e9866a387876
[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" "d1e6ac012439c8c8c163f1391fd8637319d9cd916d8959780621e9866a387876", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lsm303c-aa9caac222582d53
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lsm303c
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 10) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 10) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Lsm303c`
[INFO] [stdout]  --> src/lib.rs:12:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | let mut lsm = Lsm303c::default(i2c)?;
[INFO] [stdout]   |               ^^^^^^^ use of undeclared type or module `Lsm303c`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `LsmConfig`
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     LsmConfig::new(i2c,
[INFO] [stdout]    |     ^^^^^^^^^ use of undeclared type or module `LsmConfig`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `LsmConfig`
[INFO] [stdout]   --> src/lib.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |                    LsmConfig::new().mag_scale(conf::MagScale::_16_Ga))?;
[INFO] [stdout]    |                    ^^^^^^^^^ use of undeclared type or module `LsmConfig`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `conf`
[INFO] [stdout]   --> src/lib.rs:19:47
[INFO] [stdout]    |
[INFO] [stdout] 11 |                    LsmConfig::new().mag_scale(conf::MagScale::_16_Ga))?;
[INFO] [stdout]    |                                               ^^^^ use of undeclared type or module `conf`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `i2c` in this scope
[INFO] [stdout]  --> src/lib.rs:12:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | let mut lsm = Lsm303c::default(i2c)?;
[INFO] [stdout]   |                                ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `i2c` in this scope
[INFO] [stdout]   --> src/lib.rs:18:20
[INFO] [stdout]    |
[INFO] [stdout] 10 |     LsmConfig::new(i2c,
[INFO] [stdout]    |                    ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 3  | / fn main() {
[INFO] [stdout] 4  | | let mut lsm = Lsm303c::default(i2c)?;
[INFO] [stdout]    | |               ^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 5  | | // to get all supported measurements:
[INFO] [stdout] 6  | | let all = lsm.all()?;
[INFO] [stdout] ...  |
[INFO] [stdout] 11 | |                    LsmConfig::new().mag_scale(conf::MagScale::_16_Ga))?;
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:14:11
[INFO] [stdout]    |
[INFO] [stdout] 3  | / fn main() {
[INFO] [stdout] 4  | | let mut lsm = Lsm303c::default(i2c)?;
[INFO] [stdout] 5  | | // to get all supported measurements:
[INFO] [stdout] 6  | | let all = lsm.all()?;
[INFO] [stdout]    | |           ^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] ...  |
[INFO] [stdout] 11 | |                    LsmConfig::new().mag_scale(conf::MagScale::_16_Ga))?;
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 3  |  / fn main() {
[INFO] [stdout] 4  |  | let mut lsm = Lsm303c::default(i2c)?;
[INFO] [stdout] 5  |  | // to get all supported measurements:
[INFO] [stdout] 6  |  | let all = lsm.all()?;
[INFO] [stdout] ...   |
[INFO] [stdout] 10 | /|     LsmConfig::new(i2c,
[INFO] [stdout] 11 | ||                    LsmConfig::new().mag_scale(conf::MagScale::_16_Ga))?;
[INFO] [stdout]    | ||_______________________________________________________________________^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 12 |  | }
[INFO] [stdout]    |  |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 10)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "d1e6ac012439c8c8c163f1391fd8637319d9cd916d8959780621e9866a387876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1e6ac012439c8c8c163f1391fd8637319d9cd916d8959780621e9866a387876", kill_on_drop: false }`
[INFO] [stdout] d1e6ac012439c8c8c163f1391fd8637319d9cd916d8959780621e9866a387876
