[INFO] fetching crate sorted-iter 0.1.11...
[INFO] checking sorted-iter-0.1.11 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate sorted-iter 0.1.11 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate sorted-iter 0.1.11 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 sorted-iter 0.1.11
[INFO] finished tweaking crates.io crate sorted-iter 0.1.11
[INFO] tweaked toml for crates.io crate sorted-iter 0.1.11 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate sorted-iter 0.1.11 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck_macros v0.8.0
[INFO] [stderr]   Downloaded libc v0.2.139
[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] ef412d28c21b36aa9eae41d66c056cc735d40a2458c31ed3814ac7c597b343ba
[INFO] running `Command { std: "docker" "start" "-a" "ef412d28c21b36aa9eae41d66c056cc735d40a2458c31ed3814ac7c597b343ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef412d28c21b36aa9eae41d66c056cc735d40a2458c31ed3814ac7c597b343ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef412d28c21b36aa9eae41d66c056cc735d40a2458c31ed3814ac7c597b343ba", kill_on_drop: false }`
[INFO] [stdout] ef412d28c21b36aa9eae41d66c056cc735d40a2458c31ed3814ac7c597b343ba
[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] c23c6643178dd30a39c023ba3b20e054757ee7484903fa02098f9d9895254a5b
[INFO] running `Command { std: "docker" "start" "-a" "c23c6643178dd30a39c023ba3b20e054757ee7484903fa02098f9d9895254a5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking sorted-iter v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Ordering` is imported redundantly
[INFO] [stdout]  --> src/sorted_iterator.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `Ordering` is already imported here
[INFO] [stdout] 3 | use core::cmp::Ordering::*;
[INFO] [stdout] 4 | use core::cmp::{max, min, Ordering, Reverse};
[INFO] [stdout]   |                           ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SortedByItem` is imported redundantly
[INFO] [stdout]  --> src/sorted_pair_iterator.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `SortedByItem` is already imported here
[INFO] [stdout] 3 | use crate::sorted_iterator::SortedByItem;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]    Compiling quickcheck_macros v0.8.0
[INFO] [stdout] warning: the item `Ordering` is imported redundantly
[INFO] [stdout]  --> src/sorted_iterator.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `Ordering` is already imported here
[INFO] [stdout] 3 | use core::cmp::Ordering::*;
[INFO] [stdout] 4 | use core::cmp::{max, min, Ordering, Reverse};
[INFO] [stdout]   |                           ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SortedByItem` is imported redundantly
[INFO] [stdout]  --> src/sorted_pair_iterator.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `SortedByItem` is already imported here
[INFO] [stdout] 3 | use crate::sorted_iterator::SortedByItem;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Debug` is imported redundantly
[INFO] [stdout]    --> src/sorted_pair_iterator.rs:435:9
[INFO] [stdout]     |
[INFO] [stdout] 433 |     use super::*;
[INFO] [stdout]     |         -------- the item `Debug` is already imported here
[INFO] [stdout] 434 |     use collections::BTreeMap;
[INFO] [stdout] 435 |     use core::fmt::Debug;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.26s
[INFO] running `Command { std: "docker" "inspect" "c23c6643178dd30a39c023ba3b20e054757ee7484903fa02098f9d9895254a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c23c6643178dd30a39c023ba3b20e054757ee7484903fa02098f9d9895254a5b", kill_on_drop: false }`
[INFO] [stdout] c23c6643178dd30a39c023ba3b20e054757ee7484903fa02098f9d9895254a5b
[INFO] checking sorted-iter-0.1.11 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate sorted-iter 0.1.11 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate sorted-iter 0.1.11 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sorted-iter 0.1.11
[INFO] finished tweaking crates.io crate sorted-iter 0.1.11
[INFO] tweaked toml for crates.io crate sorted-iter 0.1.11 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate sorted-iter 0.1.11 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0de3894c6c7fa07276c97be2c359fc7ab5efc19641533a0f8f772f358e2f260a
[INFO] running `Command { std: "docker" "start" "-a" "0de3894c6c7fa07276c97be2c359fc7ab5efc19641533a0f8f772f358e2f260a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0de3894c6c7fa07276c97be2c359fc7ab5efc19641533a0f8f772f358e2f260a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0de3894c6c7fa07276c97be2c359fc7ab5efc19641533a0f8f772f358e2f260a", kill_on_drop: false }`
[INFO] [stdout] 0de3894c6c7fa07276c97be2c359fc7ab5efc19641533a0f8f772f358e2f260a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09bf03e0ede600c269bce545de7f8d86e2a5ee4f262c37d0bd3c394755b13556
[INFO] running `Command { std: "docker" "start" "-a" "09bf03e0ede600c269bce545de7f8d86e2a5ee4f262c37d0bd3c394755b13556", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking sorted-iter v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Ordering` is imported redundantly
[INFO] [stdout]  --> src/sorted_iterator.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `Ordering` is already imported here
[INFO] [stdout] 3 | use core::cmp::Ordering::*;
[INFO] [stdout] 4 | use core::cmp::{max, min, Ordering, Reverse};
[INFO] [stdout]   |                           ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SortedByItem` is imported redundantly
[INFO] [stdout]  --> src/sorted_pair_iterator.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `SortedByItem` is already imported here
[INFO] [stdout] 3 | use crate::sorted_iterator::SortedByItem;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling quickcheck_macros v0.8.0
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stdout] warning: the item `Ordering` is imported redundantly
[INFO] [stdout]  --> src/sorted_iterator.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `Ordering` is already imported here
[INFO] [stdout] 3 | use core::cmp::Ordering::*;
[INFO] [stdout] 4 | use core::cmp::{max, min, Ordering, Reverse};
[INFO] [stdout]   |                           ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SortedByItem` is imported redundantly
[INFO] [stdout]  --> src/sorted_pair_iterator.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `SortedByItem` is already imported here
[INFO] [stdout] 3 | use crate::sorted_iterator::SortedByItem;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Debug` is imported redundantly
[INFO] [stdout]    --> src/sorted_pair_iterator.rs:435:9
[INFO] [stdout]     |
[INFO] [stdout] 433 |     use super::*;
[INFO] [stdout]     |         -------- the item `Debug` is already imported here
[INFO] [stdout] 434 |     use collections::BTreeMap;
[INFO] [stdout] 435 |     use core::fmt::Debug;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.15s
[INFO] running `Command { std: "docker" "inspect" "09bf03e0ede600c269bce545de7f8d86e2a5ee4f262c37d0bd3c394755b13556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09bf03e0ede600c269bce545de7f8d86e2a5ee4f262c37d0bd3c394755b13556", kill_on_drop: false }`
[INFO] [stdout] 09bf03e0ede600c269bce545de7f8d86e2a5ee4f262c37d0bd3c394755b13556