[INFO] fetching crate algostru 0.4.0...
[INFO] checking algostru-0.4.0 against try#8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f for pr-114559
[INFO] extracting crate algostru 0.4.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate algostru 0.4.0 on toolchain 8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate algostru 0.4.0
[INFO] finished tweaking crates.io crate algostru 0.4.0
[INFO] tweaked toml for crates.io crate algostru 0.4.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate algostru 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7608fb55d1cf40cb0dde7dffdc8528db5c8de03019609f176fe1c84edbe84ad4
[INFO] running `Command { std: "docker" "start" "-a" "7608fb55d1cf40cb0dde7dffdc8528db5c8de03019609f176fe1c84edbe84ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7608fb55d1cf40cb0dde7dffdc8528db5c8de03019609f176fe1c84edbe84ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7608fb55d1cf40cb0dde7dffdc8528db5c8de03019609f176fe1c84edbe84ad4", kill_on_drop: false }`
[INFO] [stdout] 7608fb55d1cf40cb0dde7dffdc8528db5c8de03019609f176fe1c84edbe84ad4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9f58f9c47b4c14b3ebd2b1e5d910a8c75b8fd885d5f9803d1e493e8ba0cc12b
[INFO] running `Command { std: "docker" "start" "-a" "b9f58f9c47b4c14b3ebd2b1e5d910a8c75b8fd885d5f9803d1e493e8ba0cc12b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking crossterm v0.18.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking tui v0.13.0
[INFO] [stderr]     Checking simba v0.3.1
[INFO] [stderr]     Checking rand_distr v0.3.0
[INFO] [stderr]     Checking nalgebra v0.24.0
[INFO] [stderr]     Checking algostru v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/collections/multiplication/strassen.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let midpoint_row = x.nrows().div_floor(&divisor);
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `num_integer::Integer::div_floor(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(int_roundings)]` to the crate attributes to enable `core::num::<impl usize>::div_floor`
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/collections/multiplication/strassen.rs:31:35
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let midpoint_cols = x.ncols().div_floor(&divisor);
[INFO] [stdout]    |                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `num_integer::Integer::div_floor(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(int_roundings)]` to the crate attributes to enable `core::num::<impl usize>::div_floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/collections/multiplication/strassen.rs:30:34
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let midpoint_row = x.nrows().div_floor(&divisor);
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `num_integer::Integer::div_floor(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(int_roundings)]` to the crate attributes to enable `core::num::<impl usize>::div_floor`
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/collections/multiplication/strassen.rs:31:35
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let midpoint_cols = x.ncols().div_floor(&divisor);
[INFO] [stdout]    |                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `num_integer::Integer::div_floor(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(int_roundings)]` to the crate attributes to enable `core::num::<impl usize>::div_floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `store` is never read
[INFO] [stdout]   --> src/gui/application.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Application {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 19 |     store: Rc<RefCell<Store>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `store` is never read
[INFO] [stdout]   --> src/gui/application.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Application {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 19 |     store: Rc<RefCell<Store>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `store` is never read
[INFO] [stdout]   --> src/gui/screen/dashboard.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct Dashboard {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 46 |     store: Rc<RefCell<Store>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `store` is never read
[INFO] [stdout]   --> src/gui/screen/dashboard.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct Dashboard {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 46 |     store: Rc<RefCell<Store>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.78s
[INFO] running `Command { std: "docker" "inspect" "b9f58f9c47b4c14b3ebd2b1e5d910a8c75b8fd885d5f9803d1e493e8ba0cc12b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9f58f9c47b4c14b3ebd2b1e5d910a8c75b8fd885d5f9803d1e493e8ba0cc12b", kill_on_drop: false }`
[INFO] [stdout] b9f58f9c47b4c14b3ebd2b1e5d910a8c75b8fd885d5f9803d1e493e8ba0cc12b
