[INFO] fetching crate polsim 0.1.2...
[INFO] checking polsim-0.1.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate polsim 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate polsim 0.1.2 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polsim 0.1.2
[INFO] finished tweaking crates.io crate polsim 0.1.2
[INFO] tweaked toml for crates.io crate polsim 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 130 packages
[INFO] [stderr]       Adding alga v0.7.2 (latest: v0.9.3)
[INFO] [stderr]       Adding approx v0.3.2 (latest: v0.5.1)
[INFO] [stderr]       Adding arrayvec v0.5.2 (latest: v0.7.4)
[INFO] [stderr]       Adding assert_approx_eq v1.0.0 (latest: v1.1.0)
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding blake2b_simd v0.5.11 (latest: v1.0.2)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding clap-verbosity-flag v0.1.0 (latest: v2.2.0)
[INFO] [stderr]       Adding cloudabi v0.0.3 (latest: v0.1.0)
[INFO] [stderr]       Adding constant_time_eq v0.1.5 (latest: v0.3.0)
[INFO] [stderr]       Adding dirs v1.0.5 (latest: v5.0.1)
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding env_logger v0.5.13 (latest: v0.11.3)
[INFO] [stderr]       Adding generic-array v0.11.2 (latest: v1.0.0)
[INFO] [stderr]       Adding getrandom v0.1.16 (latest: v0.2.12)
[INFO] [stderr]       Adding glob v0.2.11 (latest: v0.3.1)
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding humantime v1.3.0 (latest: v2.1.0)
[INFO] [stderr]       Adding libm v0.1.4 (latest: v0.2.8)
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding matrixmultiply v0.1.15 (latest: v0.3.8)
[INFO] [stderr]       Adding nalgebra v0.16.14 (latest: v0.32.5)
[INFO] [stderr]       Adding num v0.2.1 (latest: v0.4.1)
[INFO] [stderr]       Adding num-bigint v0.2.6 (latest: v0.4.4)
[INFO] [stderr]       Adding num-complex v0.2.4 (latest: v0.4.5)
[INFO] [stderr]       Adding num-rational v0.2.4 (latest: v0.4.1)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding prettytable-rs v0.8.0 (latest: v0.10.0)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding proptest v0.8.7 (latest: v1.4.0)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding quicli v0.3.1 (latest: v0.4.0)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding rand v0.5.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rawpointer v0.1.0 (latest: v0.2.1)
[INFO] [stderr]       Adding redox_syscall v0.1.57 (latest: v0.5.1)
[INFO] [stderr]       Adding redox_users v0.3.5 (latest: v0.4.5)
[INFO] [stderr]       Adding regex-syntax v0.6.29 (latest: v0.8.3)
[INFO] [stderr]       Adding rust-argon2 v0.8.3 (latest: v2.1.0)
[INFO] [stderr]       Adding rusty-fork v0.2.2 (latest: v0.3.0)
[INFO] [stderr]       Adding strsim v0.8.0 (latest: v0.11.1)
[INFO] [stderr]       Adding structopt v0.2.18 (latest: v0.3.26)
[INFO] [stderr]       Adding structopt-derive v0.2.18 (latest: v0.4.18)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding term v0.5.2 (latest: v0.7.0)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding toml v0.4.10 (latest: v0.8.12)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dirs v1.0.5
[INFO] [stderr]   Downloaded generic-array v0.11.2
[INFO] [stderr]   Downloaded polarization v0.2.0
[INFO] [stderr]   Downloaded prettytable-rs v0.8.0
[INFO] [stderr]   Downloaded assert_approx_eq v1.0.0
[INFO] [stderr]   Downloaded term v0.5.2
[INFO] [stderr]   Downloaded toml v0.4.10
[INFO] [stderr]   Downloaded alga v0.7.2
[INFO] [stderr]   Downloaded libm v0.1.4
[INFO] [stderr]   Downloaded nalgebra v0.16.14
[INFO] [stderr]   Downloaded proptest v0.8.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69a6b4068ae551c176d2d7c8d00f9ac51be8fbe1d3d3c6a4604021a67317cec6
[INFO] running `Command { std: "docker" "start" "-a" "69a6b4068ae551c176d2d7c8d00f9ac51be8fbe1d3d3c6a4604021a67317cec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69a6b4068ae551c176d2d7c8d00f9ac51be8fbe1d3d3c6a4604021a67317cec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69a6b4068ae551c176d2d7c8d00f9ac51be8fbe1d3d3c6a4604021a67317cec6", kill_on_drop: false }`
[INFO] [stdout] 69a6b4068ae551c176d2d7c8d00f9ac51be8fbe1d3d3c6a4604021a67317cec6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0bae186217a0c2d3032e1a54068639c81191b41936118334e0144de24e04fd5
[INFO] running `Command { std: "docker" "start" "-a" "d0bae186217a0c2d3032e1a54068639c81191b41936118334e0144de24e04fd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking generic-array v0.11.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking alga v0.7.2
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking nalgebra v0.16.14
[INFO] [stderr]     Checking assert_approx_eq v1.0.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking proptest v0.8.7
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking clap-verbosity-flag v0.1.0
[INFO] [stderr]     Checking quicli v0.3.1
[INFO] [stderr]     Checking polarization v0.2.0
[INFO] [stderr]     Checking polsim v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `proptest` is imported redundantly
[INFO] [stdout]    --> src/validate.rs:307:20
[INFO] [stdout]     |
[INFO] [stdout] 307 |     use proptest::{self, prelude::*};
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:12:1
[INFO] [stdout]     |
[INFO] [stdout] 12  | extern crate proptest;
[INFO] [stdout]     | ---------------------- the item `proptest` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.49s
[INFO] running `Command { std: "docker" "inspect" "d0bae186217a0c2d3032e1a54068639c81191b41936118334e0144de24e04fd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0bae186217a0c2d3032e1a54068639c81191b41936118334e0144de24e04fd5", kill_on_drop: false }`
[INFO] [stdout] d0bae186217a0c2d3032e1a54068639c81191b41936118334e0144de24e04fd5