[INFO] fetching crate atomic_ref 0.2.1...
[INFO] checking atomic_ref-0.2.1 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[INFO] extracting crate atomic_ref 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate atomic_ref 0.2.1 on toolchain b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atomic_ref 0.2.1
[INFO] finished tweaking crates.io crate atomic_ref 0.2.1
[INFO] tweaked toml for crates.io crate atomic_ref 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4adcbbeeb7aba78743e767ebe3c5363b88a3ed6eb694c010fdb999f6e21e5c08
[INFO] running `Command { std: "docker" "start" "-a" "4adcbbeeb7aba78743e767ebe3c5363b88a3ed6eb694c010fdb999f6e21e5c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4adcbbeeb7aba78743e767ebe3c5363b88a3ed6eb694c010fdb999f6e21e5c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4adcbbeeb7aba78743e767ebe3c5363b88a3ed6eb694c010fdb999f6e21e5c08", kill_on_drop: false }`
[INFO] [stdout] 4adcbbeeb7aba78743e767ebe3c5363b88a3ed6eb694c010fdb999f6e21e5c08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b6f716a9c0f2a2cebffdcae7482b794a84ff00a5a8bf082d7ebc121a2bf70d7
[INFO] running `Command { std: "docker" "start" "-a" "2b6f716a9c0f2a2cebffdcae7482b794a84ff00a5a8bf082d7ebc121a2bf70d7", kill_on_drop: false }`
[INFO] [stderr]     Checking atomic_ref v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | use core::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/prelude/mod.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | use core::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/core/src/prelude/mod.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` 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/lib.rs:91:29
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct Invariant<'a, T: 'a>(&'a mut &'a T);
[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] 91 | struct Invariant<'a, T: 'a>(());
[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/lib.rs:91:29
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct Invariant<'a, T: 'a>(&'a mut &'a T);
[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] 91 | struct Invariant<'a, T: 'a>(());
[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 0.05s
[INFO] running `Command { std: "docker" "inspect" "2b6f716a9c0f2a2cebffdcae7482b794a84ff00a5a8bf082d7ebc121a2bf70d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b6f716a9c0f2a2cebffdcae7482b794a84ff00a5a8bf082d7ebc121a2bf70d7", kill_on_drop: false }`
[INFO] [stdout] 2b6f716a9c0f2a2cebffdcae7482b794a84ff00a5a8bf082d7ebc121a2bf70d7
[INFO] checking atomic_ref-0.2.1 against try#57fe1b734d9ff1c8a92bda60b85506b9648158d3 for pr-123752
[INFO] extracting crate atomic_ref 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate atomic_ref 0.2.1 on toolchain 57fe1b734d9ff1c8a92bda60b85506b9648158d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atomic_ref 0.2.1
[INFO] finished tweaking crates.io crate atomic_ref 0.2.1
[INFO] tweaked toml for crates.io crate atomic_ref 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fb0878022034c67f07fb57e9c480a42ead496eef8434f654b46fb1c53bd221a
[INFO] running `Command { std: "docker" "start" "-a" "0fb0878022034c67f07fb57e9c480a42ead496eef8434f654b46fb1c53bd221a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fb0878022034c67f07fb57e9c480a42ead496eef8434f654b46fb1c53bd221a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fb0878022034c67f07fb57e9c480a42ead496eef8434f654b46fb1c53bd221a", kill_on_drop: false }`
[INFO] [stdout] 0fb0878022034c67f07fb57e9c480a42ead496eef8434f654b46fb1c53bd221a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4faf3858fc987026d5c4b2ded970e3881d302e0d84d1b31dba10535c27a16eda
[INFO] running `Command { std: "docker" "start" "-a" "4faf3858fc987026d5c4b2ded970e3881d302e0d84d1b31dba10535c27a16eda", kill_on_drop: false }`
[INFO] [stderr]     Checking atomic_ref v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | use core::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/core/src/prelude/mod.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | use core::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/core/src/prelude/mod.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Default` 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/lib.rs:91:29
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct Invariant<'a, T: 'a>(&'a mut &'a T);
[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] 91 | struct Invariant<'a, T: 'a>(());
[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/lib.rs:91:29
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct Invariant<'a, T: 'a>(&'a mut &'a T);
[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] 91 | struct Invariant<'a, T: 'a>(());
[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 0.07s
[INFO] running `Command { std: "docker" "inspect" "4faf3858fc987026d5c4b2ded970e3881d302e0d84d1b31dba10535c27a16eda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4faf3858fc987026d5c4b2ded970e3881d302e0d84d1b31dba10535c27a16eda", kill_on_drop: false }`
[INFO] [stdout] 4faf3858fc987026d5c4b2ded970e3881d302e0d84d1b31dba10535c27a16eda
