[INFO] fetching crate btree-vec 0.3.1...
[INFO] checking btree-vec-0.3.1 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate btree-vec 0.3.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate btree-vec 0.3.1 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate btree-vec 0.3.1
[INFO] finished tweaking crates.io crate btree-vec 0.3.1
[INFO] tweaked toml for crates.io crate btree-vec 0.3.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded allocator-fallback v0.1.8
[INFO] [stderr]   Downloaded tagged-pointer v0.2.7
[INFO] [stderr]   Downloaded add-syntax v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a8990d94e66c619316a7f2b79297bf08310ba042e2f45b2c2489605074048ee
[INFO] running `Command { std: "docker" "start" "-a" "9a8990d94e66c619316a7f2b79297bf08310ba042e2f45b2c2489605074048ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a8990d94e66c619316a7f2b79297bf08310ba042e2f45b2c2489605074048ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a8990d94e66c619316a7f2b79297bf08310ba042e2f45b2c2489605074048ee", kill_on_drop: false }`
[INFO] [stdout] 9a8990d94e66c619316a7f2b79297bf08310ba042e2f45b2c2489605074048ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d999ea62fce7ebf3006c3b33a3a3ff422e723caa1ade5233b276967159f4f695
[INFO] running `Command { std: "docker" "start" "-a" "d999ea62fce7ebf3006c3b33a3a3ff422e723caa1ade5233b276967159f4f695", kill_on_drop: false }`
[INFO] [stderr]    Compiling tagged-pointer v0.2.7
[INFO] [stderr]    Compiling btree-vec v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 102 | use core::iter::{ExactSizeIterator, FusedIterator};
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/prelude/mod.rs:38:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 102 | use core::iter::{ExactSizeIterator, FusedIterator};
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/prelude/mod.rs:38:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/node/parent_ptr.rs:39:23
[INFO] [stdout]    |
[INFO] [stdout] 39 |         struct Align2(u16);
[INFO] [stdout]    |                ------ ^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 39 |         struct Align2(());
[INFO] [stdout]    |                       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/node/parent_ptr.rs:39:23
[INFO] [stdout]    |
[INFO] [stdout] 39 |         struct Align2(u16);
[INFO] [stdout]    |                ------ ^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 39 |         struct Align2(());
[INFO] [stdout]    |                       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "d999ea62fce7ebf3006c3b33a3a3ff422e723caa1ade5233b276967159f4f695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d999ea62fce7ebf3006c3b33a3a3ff422e723caa1ade5233b276967159f4f695", kill_on_drop: false }`
[INFO] [stdout] d999ea62fce7ebf3006c3b33a3a3ff422e723caa1ade5233b276967159f4f695
[INFO] checking btree-vec-0.3.1 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate btree-vec 0.3.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate btree-vec 0.3.1 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate btree-vec 0.3.1
[INFO] finished tweaking crates.io crate btree-vec 0.3.1
[INFO] tweaked toml for crates.io crate btree-vec 0.3.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c5a59839a3984de9dd75390a8bff7e85c05e3c153e4da2ded3781627bc97a4d
[INFO] running `Command { std: "docker" "start" "-a" "8c5a59839a3984de9dd75390a8bff7e85c05e3c153e4da2ded3781627bc97a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c5a59839a3984de9dd75390a8bff7e85c05e3c153e4da2ded3781627bc97a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c5a59839a3984de9dd75390a8bff7e85c05e3c153e4da2ded3781627bc97a4d", kill_on_drop: false }`
[INFO] [stdout] 8c5a59839a3984de9dd75390a8bff7e85c05e3c153e4da2ded3781627bc97a4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4804a299e765b2a08a418222808a2b0ed556fd23236b80a2615e7912ece8949a
[INFO] running `Command { std: "docker" "start" "-a" "4804a299e765b2a08a418222808a2b0ed556fd23236b80a2615e7912ece8949a", kill_on_drop: false }`
[INFO] [stderr]    Compiling tagged-pointer v0.2.7
[INFO] [stderr]    Compiling btree-vec v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 102 | use core::iter::{ExactSizeIterator, FusedIterator};
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/prelude/mod.rs:38:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ExactSizeIterator` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 102 | use core::iter::{ExactSizeIterator, FusedIterator};
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/prelude/mod.rs:38:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `ExactSizeIterator` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/node/parent_ptr.rs:39:23
[INFO] [stdout]    |
[INFO] [stdout] 39 |         struct Align2(u16);
[INFO] [stdout]    |                ------ ^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 39 |         struct Align2(());
[INFO] [stdout]    |                       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/node/parent_ptr.rs:39:23
[INFO] [stdout]    |
[INFO] [stdout] 39 |         struct Align2(u16);
[INFO] [stdout]    |                ------ ^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 39 |         struct Align2(());
[INFO] [stdout]    |                       ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "4804a299e765b2a08a418222808a2b0ed556fd23236b80a2615e7912ece8949a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4804a299e765b2a08a418222808a2b0ed556fd23236b80a2615e7912ece8949a", kill_on_drop: false }`
[INFO] [stdout] 4804a299e765b2a08a418222808a2b0ed556fd23236b80a2615e7912ece8949a
