[INFO] fetching crate arsert_impl 0.0.2...
[INFO] testing arsert_impl-0.0.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate arsert_impl 0.0.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate arsert_impl 0.0.2 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 crates.io crate arsert_impl 0.0.2
[INFO] finished tweaking crates.io crate arsert_impl 0.0.2
[INFO] tweaked toml for crates.io crate arsert_impl 0.0.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arsert_failure v0.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81b35873aeb7b6df3dcc117775cbfc798078d1ad0c9d03f8da02e677b44f256e
[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" "81b35873aeb7b6df3dcc117775cbfc798078d1ad0c9d03f8da02e677b44f256e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81b35873aeb7b6df3dcc117775cbfc798078d1ad0c9d03f8da02e677b44f256e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81b35873aeb7b6df3dcc117775cbfc798078d1ad0c9d03f8da02e677b44f256e", kill_on_drop: false }`
[INFO] [stdout] 81b35873aeb7b6df3dcc117775cbfc798078d1ad0c9d03f8da02e677b44f256e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/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] 208b05130bd4c6ba759a8dffb96374d0d12da353c523cd5ff8f796a7e5b28d5a
[INFO] running `Command { std: "docker" "start" "-a" "208b05130bd4c6ba759a8dffb96374d0d12da353c523cd5ff8f796a7e5b28d5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling arsert_failure v0.0.2
[INFO] [stderr]    Compiling arsert_impl v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/lib.rs:7:68
[INFO] [stdout]   |
[INFO] [stdout] 7 | use syn::{self, parenthesized, parse_macro_input, Attribute, Expr, ExprPath, Result, Token};
[INFO] [stdout]   |                                                                    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{Expr, ExprPath, Result};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/binary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/simple.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions/simple.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{Expr, ExprPath};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/unary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.71s
[INFO] running `Command { std: "docker" "inspect" "208b05130bd4c6ba759a8dffb96374d0d12da353c523cd5ff8f796a7e5b28d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "208b05130bd4c6ba759a8dffb96374d0d12da353c523cd5ff8f796a7e5b28d5a", kill_on_drop: false }`
[INFO] [stdout] 208b05130bd4c6ba759a8dffb96374d0d12da353c523cd5ff8f796a7e5b28d5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 55af3c9728b24bf3a19c59b7a9182a0ea3953247b760fac95638c980a577225a
[INFO] running `Command { std: "docker" "start" "-a" "55af3c9728b24bf3a19c59b7a9182a0ea3953247b760fac95638c980a577225a", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/lib.rs:7:68
[INFO] [stdout]   |
[INFO] [stdout] 7 | use syn::{self, parenthesized, parse_macro_input, Attribute, Expr, ExprPath, Result, Token};
[INFO] [stdout]   |                                                                    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{Expr, ExprPath, Result};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/binary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/simple.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions/simple.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{Expr, ExprPath};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/unary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling arsert_impl v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/lib.rs:7:68
[INFO] [stdout]   |
[INFO] [stdout] 7 | use syn::{self, parenthesized, parse_macro_input, Attribute, Expr, ExprPath, Result, Token};
[INFO] [stdout]   |                                                                    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{Expr, ExprPath, Result};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/binary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/simple.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions/simple.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{Expr, ExprPath};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/unary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "55af3c9728b24bf3a19c59b7a9182a0ea3953247b760fac95638c980a577225a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55af3c9728b24bf3a19c59b7a9182a0ea3953247b760fac95638c980a577225a", kill_on_drop: false }`
[INFO] [stdout] 55af3c9728b24bf3a19c59b7a9182a0ea3953247b760fac95638c980a577225a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", 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] 4e4b1093a873ca487c87c263864233ceadbd5f0a6a22ec6df027def9e7c4bf4c
[INFO] running `Command { std: "docker" "start" "-a" "4e4b1093a873ca487c87c263864233ceadbd5f0a6a22ec6df027def9e7c4bf4c", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `ExprPath`
[INFO] [stderr]  --> src/lib.rs:7:68
[INFO] [stderr]   |
[INFO] [stderr] 7 | use syn::{self, parenthesized, parse_macro_input, Attribute, Expr, ExprPath, Result, Token};
[INFO] [stderr]   |                                                                    ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExprPath`
[INFO] [stderr]  --> src/expressions.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use syn::{Expr, ExprPath, Result};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `proc_macro2`
[INFO] [stderr]  --> src/expressions/binary.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use proc_macro2;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `proc_macro2`
[INFO] [stderr]  --> src/expressions/simple.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use proc_macro2;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExprPath`
[INFO] [stderr]  --> src/expressions/simple.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use syn::{Expr, ExprPath};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `proc_macro2`
[INFO] [stderr]  --> src/expressions/unary.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use proc_macro2;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExprPath`
[INFO] [stderr]  --> src/lib.rs:7:68
[INFO] [stderr]   |
[INFO] [stderr] 7 | use syn::{self, parenthesized, parse_macro_input, Attribute, Expr, ExprPath, Result, Token};
[INFO] [stderr]   |                                                                    ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExprPath`
[INFO] [stderr]  --> src/expressions.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use syn::{Expr, ExprPath, Result};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `proc_macro2`
[INFO] [stderr]  --> src/expressions/binary.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use proc_macro2;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `proc_macro2`
[INFO] [stderr]  --> src/expressions/simple.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use proc_macro2;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExprPath`
[INFO] [stderr]  --> src/expressions/simple.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use syn::{Expr, ExprPath};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `proc_macro2`
[INFO] [stderr]  --> src/expressions/unary.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use proc_macro2;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/arsert_impl-01c6d3e7b4bc4f9a
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests arsert_impl
[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 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4e4b1093a873ca487c87c263864233ceadbd5f0a6a22ec6df027def9e7c4bf4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e4b1093a873ca487c87c263864233ceadbd5f0a6a22ec6df027def9e7c4bf4c", kill_on_drop: false }`
[INFO] [stdout] 4e4b1093a873ca487c87c263864233ceadbd5f0a6a22ec6df027def9e7c4bf4c