[INFO] fetching crate dangerous 0.10.0...
[INFO] checking dangerous-0.10.0 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate dangerous 0.10.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate dangerous 0.10.0 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dangerous 0.10.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate dangerous 0.10.0
[INFO] tweaked toml for crates.io crate dangerous 0.10.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate dangerous 0.10.0 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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded colored-diff v0.2.2
[INFO] [stderr]   Downloaded zc-derive v0.4.0
[INFO] [stderr]   Downloaded imap-proto v0.14.0
[INFO] [stderr]   Downloaded bitvec v0.19.5
[INFO] [stderr]   Downloaded zc v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abc744bae49bec80e13e5a3ea59b4382b3f48da8d83bea1477a57aad364589f2
[INFO] running `Command { std: "docker" "start" "-a" "abc744bae49bec80e13e5a3ea59b4382b3f48da8d83bea1477a57aad364589f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abc744bae49bec80e13e5a3ea59b4382b3f48da8d83bea1477a57aad364589f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abc744bae49bec80e13e5a3ea59b4382b3f48da8d83bea1477a57aad364589f2", kill_on_drop: false }`
[INFO] [stdout] abc744bae49bec80e13e5a3ea59b4382b3f48da8d83bea1477a57aad364589f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a17dc7635581214bdea44d9178f6009543886f31ec145720cc281c355795fe0a
[INFO] running `Command { std: "docker" "start" "-a" "a17dc7635581214bdea44d9178f6009543886f31ec145720cc281c355795fe0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling anyhow v1.0.39
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling indoc v1.0.3
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]     Checking colored-diff v0.2.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking dangerous v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `Box` is imported redundantly
[INFO] [stdout]   --> src/error/backtrace.rs:2:13
[INFO] [stdout]    |
[INFO] [stdout] 2  | use alloc::{boxed::Box, vec::Vec};
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]   --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Box` is already defined here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     unused,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/error/backtrace.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::{boxed::Box, vec::Vec};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]  --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Box` is imported redundantly
[INFO] [stdout]   --> src/error/expected/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use alloc::boxed::Box;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/80399064afa4a2cd153f30d02c25f7ea0383ed65/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Box` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dangerous` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a17dc7635581214bdea44d9178f6009543886f31ec145720cc281c355795fe0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a17dc7635581214bdea44d9178f6009543886f31ec145720cc281c355795fe0a", kill_on_drop: false }`
[INFO] [stdout] a17dc7635581214bdea44d9178f6009543886f31ec145720cc281c355795fe0a
[INFO] checking dangerous-0.10.0 against master#09bc67b9158392361780e779d32997f14cc75c39 for opaque-soundness-fix
[INFO] extracting crate dangerous 0.10.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate dangerous 0.10.0 on toolchain 09bc67b9158392361780e779d32997f14cc75c39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dangerous 0.10.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate dangerous 0.10.0
[INFO] tweaked toml for crates.io crate dangerous 0.10.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate dangerous 0.10.0 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" "+09bc67b9158392361780e779d32997f14cc75c39" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a15694fd80e748f6b4f40be4f3001e33496ca476be1e3c4e510555211cad26d
[INFO] running `Command { std: "docker" "start" "-a" "4a15694fd80e748f6b4f40be4f3001e33496ca476be1e3c4e510555211cad26d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a15694fd80e748f6b4f40be4f3001e33496ca476be1e3c4e510555211cad26d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a15694fd80e748f6b4f40be4f3001e33496ca476be1e3c4e510555211cad26d", kill_on_drop: false }`
[INFO] [stdout] 4a15694fd80e748f6b4f40be4f3001e33496ca476be1e3c4e510555211cad26d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+09bc67b9158392361780e779d32997f14cc75c39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4033e56b4bd53e6fa381337fd3af6008c190453c7c0efa0fd2bd768d9194748f
[INFO] running `Command { std: "docker" "start" "-a" "4033e56b4bd53e6fa381337fd3af6008c190453c7c0efa0fd2bd768d9194748f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling anyhow v1.0.39
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling indoc v1.0.3
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]     Checking colored-diff v0.2.2
[INFO] [stderr]     Checking dangerous v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `Box` is imported redundantly
[INFO] [stdout]   --> src/error/backtrace.rs:2:13
[INFO] [stdout]    |
[INFO] [stdout] 2  | use alloc::{boxed::Box, vec::Vec};
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]   --> /rustc/09bc67b9158392361780e779d32997f14cc75c39/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Box` is already defined here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     unused,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/error/backtrace.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::{boxed::Box, vec::Vec};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]  --> /rustc/09bc67b9158392361780e779d32997f14cc75c39/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `Box` is imported redundantly
[INFO] [stdout]   --> src/error/expected/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use alloc::boxed::Box;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/09bc67b9158392361780e779d32997f14cc75c39/library/std/src/prelude/mod.rs:115:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Box` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dangerous` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4033e56b4bd53e6fa381337fd3af6008c190453c7c0efa0fd2bd768d9194748f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4033e56b4bd53e6fa381337fd3af6008c190453c7c0efa0fd2bd768d9194748f", kill_on_drop: false }`
[INFO] [stdout] 4033e56b4bd53e6fa381337fd3af6008c190453c7c0efa0fd2bd768d9194748f
