[INFO] fetching crate advisory-lock 0.3.0...
[INFO] checking advisory-lock-0.3.0 against try#306c6aded24f02440063be828ebe601fe5eb8323 for pr-133502-3
[INFO] extracting crate advisory-lock 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate advisory-lock 0.3.0 on toolchain 306c6aded24f02440063be828ebe601fe5eb8323
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate advisory-lock 0.3.0
[INFO] finished tweaking crates.io crate advisory-lock 0.3.0
[INFO] tweaked toml for crates.io crate advisory-lock 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80d169c644b7c5f9e8d66fa7db047faf620ca7c46c77ad45eef773510bf562b7
[INFO] running `Command { std: "docker" "start" "-a" "80d169c644b7c5f9e8d66fa7db047faf620ca7c46c77ad45eef773510bf562b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80d169c644b7c5f9e8d66fa7db047faf620ca7c46c77ad45eef773510bf562b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80d169c644b7c5f9e8d66fa7db047faf620ca7c46c77ad45eef773510bf562b7", kill_on_drop: false }`
[INFO] [stdout] 80d169c644b7c5f9e8d66fa7db047faf620ca7c46c77ad45eef773510bf562b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+306c6aded24f02440063be828ebe601fe5eb8323" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fb9bc2a970231f229299781e250f4013c5bd9508dea94467397e734b1b53179
[INFO] running `Command { std: "docker" "start" "-a" "1fb9bc2a970231f229299781e250f4013c5bd9508dea94467397e734b1b53179", kill_on_drop: false }`
[INFO] [stderr]     Checking advisory-lock v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:128:16
[INFO] [stdout]     |
[INFO] [stdout] 128 |             f1.lock(FileLockMode::Shared).unwrap();
[INFO] [stdout]     |                ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `AdvisoryFileLock::lock(...)` to keep using the current method
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::lock`
[INFO] [stdout]     |
[INFO] [stdout] 51  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:130:16
[INFO] [stdout]     |
[INFO] [stdout] 130 |             f2.lock(FileLockMode::Shared).unwrap();
[INFO] [stdout]     |                ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `AdvisoryFileLock::lock(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::lock`
[INFO] [stdout]     |
[INFO] [stdout] 51  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:142:16
[INFO] [stdout]     |
[INFO] [stdout] 142 |             f1.lock(FileLockMode::Exclusive).unwrap();
[INFO] [stdout]     |                ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `AdvisoryFileLock::lock(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::lock`
[INFO] [stdout]     |
[INFO] [stdout] 51  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:144:24
[INFO] [stdout]     |
[INFO] [stdout] 144 |             assert!(f2.try_lock(FileLockMode::Exclusive).is_err());
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `AdvisoryFileLock::try_lock(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::try_lock`
[INFO] [stdout]     |
[INFO] [stdout] 51  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:156:16
[INFO] [stdout]     |
[INFO] [stdout] 156 |             f1.lock(FileLockMode::Shared).unwrap();
[INFO] [stdout]     |                ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `AdvisoryFileLock::lock(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::lock`
[INFO] [stdout]     |
[INFO] [stdout] 51  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:159:20
[INFO] [stdout]     |
[INFO] [stdout] 159 |                 f2.try_lock(FileLockMode::Exclusive),
[INFO] [stdout]     |                    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `AdvisoryFileLock::try_lock(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::try_lock`
[INFO] [stdout]     |
[INFO] [stdout] 51  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:173:16
[INFO] [stdout]     |
[INFO] [stdout] 173 |             f1.lock(FileLockMode::Exclusive).unwrap();
[INFO] [stdout]     |                ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `AdvisoryFileLock::lock(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::lock`
[INFO] [stdout]     |
[INFO] [stdout] 51  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/lib.rs:175:24
[INFO] [stdout]     |
[INFO] [stdout] 175 |             assert!(f2.try_lock(FileLockMode::Shared).is_err());
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `AdvisoryFileLock::try_lock(...)` to keep using the current method
[INFO] [stdout] help: add `#![feature(file_lock)]` to the crate attributes to enable `File::try_lock`
[INFO] [stdout]     |
[INFO] [stdout] 51  + #![feature(file_lock)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "1fb9bc2a970231f229299781e250f4013c5bd9508dea94467397e734b1b53179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fb9bc2a970231f229299781e250f4013c5bd9508dea94467397e734b1b53179", kill_on_drop: false }`
[INFO] [stdout] 1fb9bc2a970231f229299781e250f4013c5bd9508dea94467397e734b1b53179