[INFO] fetching crate simple-soft-float 0.1.0...
[INFO] checking simple-soft-float-0.1.0 against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] extracting crate simple-soft-float 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate simple-soft-float 0.1.0 on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple-soft-float 0.1.0
[INFO] finished tweaking crates.io crate simple-soft-float 0.1.0
[INFO] tweaked toml for crates.io crate simple-soft-float 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+da897dfb6daa268a965d2d73620316ba56020a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4495d0f34ff6308b587acad77a103a76dd4943234bb403f83ad9c7d511217da3
[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" "4495d0f34ff6308b587acad77a103a76dd4943234bb403f83ad9c7d511217da3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4495d0f34ff6308b587acad77a103a76dd4943234bb403f83ad9c7d511217da3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4495d0f34ff6308b587acad77a103a76dd4943234bb403f83ad9c7d511217da3", kill_on_drop: false }`
[INFO] [stdout] 4495d0f34ff6308b587acad77a103a76dd4943234bb403f83ad9c7d511217da3
[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=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" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8858c4811d3ce70ceee5118ae16f55ea51ffd2d5223615b7d0b45c27dd0775c
[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" "e8858c4811d3ce70ceee5118ae16f55ea51ffd2d5223615b7d0b45c27dd0775c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking algebraics v0.1.2
[INFO] [stdout] error[E0658]: use of unstable library feature 'trusted_random_access'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/algebraics-0.1.2/src/array2d.rs:607:27
[INFO] [stdout]     |
[INFO] [stdout] 607 |                 Some(self.get_unchecked(x, y))
[INFO] [stdout]     |                           ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 668 | impl_positions_wrapper!(('a, T), IterWithPositions, ((usize, usize), &'a T));
[INFO] [stdout]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: add `#![feature(trusted_random_access)]` to the crate attributes to enable
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/algebraics-0.1.2/src/array2d.rs:607:27
[INFO] [stdout]     |
[INFO] [stdout] 607 |                 Some(self.get_unchecked(x, y))
[INFO] [stdout]     |                           ^^^^^^^^^^^^^ -  - supplied 2 arguments
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 668 | impl_positions_wrapper!(('a, T), IterWithPositions, ((usize, usize), &'a T));
[INFO] [stdout]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `array2d::IterWithPositions<'a, T>: std::iter::adapters::zip::TrustedRandomAccess` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/algebraics-0.1.2/src/array2d.rs:607:27
[INFO] [stdout]     |
[INFO] [stdout] 607 |                 Some(self.get_unchecked(x, y))
[INFO] [stdout]     |                           ^^^^^^^^^^^^^ the trait `std::iter::adapters::zip::TrustedRandomAccess` is not implemented for `array2d::IterWithPositions<'a, T>`
[INFO] [stdout] ...
[INFO] [stdout] 668 | impl_positions_wrapper!(('a, T), IterWithPositions, ((usize, usize), &'a T));
[INFO] [stdout]     | ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'trusted_random_access'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/algebraics-0.1.2/src/array2d.rs:607:27
[INFO] [stdout]     |
[INFO] [stdout] 607 |                 Some(self.get_unchecked(x, y))
[INFO] [stdout]     |                           ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 725 | impl_positions_wrapper!(('a, T), Iter, &'a T);
[INFO] [stdout]     | ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: add `#![feature(trusted_random_access)]` to the crate attributes to enable
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 2 arguments were supplied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/algebraics-0.1.2/src/array2d.rs:607:27
[INFO] [stdout]     |
[INFO] [stdout] 607 |                 Some(self.get_unchecked(x, y))
[INFO] [stdout]     |                           ^^^^^^^^^^^^^ -  - supplied 2 arguments
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           expected 1 argument
[INFO] [stdout] ...
[INFO] [stdout] 725 | impl_positions_wrapper!(('a, T), Iter, &'a T);
[INFO] [stdout]     | ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `array2d::Iter<'a, T>: std::iter::adapters::zip::TrustedRandomAccess` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/algebraics-0.1.2/src/array2d.rs:607:27
[INFO] [stdout]     |
[INFO] [stdout] 607 |                 Some(self.get_unchecked(x, y))
[INFO] [stdout]     |                           ^^^^^^^^^^^^^ the trait `std::iter::adapters::zip::TrustedRandomAccess` is not implemented for `array2d::Iter<'a, T>`
[INFO] [stdout] ...
[INFO] [stdout] 725 | impl_positions_wrapper!(('a, T), Iter, &'a T);
[INFO] [stdout]     | ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0277, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `algebraics`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e8858c4811d3ce70ceee5118ae16f55ea51ffd2d5223615b7d0b45c27dd0775c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8858c4811d3ce70ceee5118ae16f55ea51ffd2d5223615b7d0b45c27dd0775c", kill_on_drop: false }`
[INFO] [stdout] e8858c4811d3ce70ceee5118ae16f55ea51ffd2d5223615b7d0b45c27dd0775c