[INFO] fetching crate mech-stats 0.0.5...
[INFO] checking mech-stats-0.0.5 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate mech-stats 0.0.5 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mech-stats 0.0.5 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mech-stats 0.0.5
[INFO] finished tweaking crates.io crate mech-stats 0.0.5
[INFO] tweaked toml for crates.io crate mech-stats 0.0.5 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b06504adfd6c5ae5e609f80b9b786161024aaf8966948f458764973e1b1ab719
[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" "b06504adfd6c5ae5e609f80b9b786161024aaf8966948f458764973e1b1ab719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b06504adfd6c5ae5e609f80b9b786161024aaf8966948f458764973e1b1ab719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b06504adfd6c5ae5e609f80b9b786161024aaf8966948f458764973e1b1ab719", kill_on_drop: false }`
[INFO] [stdout] b06504adfd6c5ae5e609f80b9b786161024aaf8966948f458764973e1b1ab719
[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=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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73cf15c1bcf7f30a0c853722075dc7db1ef4970a5e5b3396c4fa64681c8be51b
[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" "73cf15c1bcf7f30a0c853722075dc7db1ef4970a5e5b3396c4fa64681c8be51b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking mech-core v0.0.5
[INFO] [stderr]     Checking mech-utilities v0.0.5
[INFO] [stderr]     Checking mech-stats v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Interner`, `Transaction`
[INFO] [stdout]  --> src/lib.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mech_core::{Interner, Transaction};
[INFO] [stdout]   |                 ^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `QuantityMath`, `Quantity`, `make_quantity`
[INFO] [stdout]  --> src/lib.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mech_core::{Quantity, ToQuantity, QuantityMath, make_quantity};
[INFO] [stdout]   |                 ^^^^^^^^              ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Interner`, `Transaction`
[INFO] [stdout]  --> src/lib.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use mech_core::{Interner, Transaction};
[INFO] [stdout]   |                 ^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `QuantityMath`, `Quantity`, `make_quantity`
[INFO] [stdout]  --> src/lib.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mech_core::{Quantity, ToQuantity, QuantityMath, make_quantity};
[INFO] [stdout]   |                 ^^^^^^^^              ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Vec<(std::string::String, mech_core::Table)>`, which is not FFI-safe
[INFO] [stdout]  --> src/lib.rs:8:40
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub extern "C" fn stats_average(input: Vec<(String, Table)>) -> Table {
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `mech_core::Table`, which is not FFI-safe
[INFO] [stdout]  --> src/lib.rs:8:65
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub extern "C" fn stats_average(input: Vec<(String, Table)>) -> Table {
[INFO] [stdout]   |                                                                 ^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Vec<(std::string::String, mech_core::Table)>`, which is not FFI-safe
[INFO] [stdout]  --> src/lib.rs:8:40
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub extern "C" fn stats_average(input: Vec<(String, Table)>) -> Table {
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `mech_core::Table`, which is not FFI-safe
[INFO] [stdout]  --> src/lib.rs:8:65
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub extern "C" fn stats_average(input: Vec<(String, Table)>) -> Table {
[INFO] [stdout]   |                                                                 ^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Quantity`, `make_quantity`
[INFO] [stdout]  --> tests/stats.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use mech_core::{Quantity, ToQuantity, QuantityMath, make_quantity};
[INFO] [stdout]   |                 ^^^^^^^^                            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `QuantityMath`
[INFO] [stdout]  --> tests/stats.rs:6:39
[INFO] [stdout]   |
[INFO] [stdout] 6 | use mech_core::{Quantity, ToQuantity, QuantityMath, make_quantity};
[INFO] [stdout]   |                                       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.80s
[INFO] running `Command { std: "docker" "inspect" "73cf15c1bcf7f30a0c853722075dc7db1ef4970a5e5b3396c4fa64681c8be51b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73cf15c1bcf7f30a0c853722075dc7db1ef4970a5e5b3396c4fa64681c8be51b", kill_on_drop: false }`
[INFO] [stdout] 73cf15c1bcf7f30a0c853722075dc7db1ef4970a5e5b3396c4fa64681c8be51b