[INFO] fetching crate compiler_builtins 0.1.104...
[INFO] checking compiler_builtins-0.1.104 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate compiler_builtins 0.1.104 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate compiler_builtins 0.1.104 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate compiler_builtins 0.1.104
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate compiler_builtins 0.1.104
[INFO] tweaked toml for crates.io crate compiler_builtins 0.1.104 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate compiler_builtins 0.1.104 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.0
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81a53caa94f2787b75c15f40054c8717dba6efacecf76b8fef2e8b8d12275c15
[INFO] running `Command { std: "docker" "start" "-a" "81a53caa94f2787b75c15f40054c8717dba6efacecf76b8fef2e8b8d12275c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81a53caa94f2787b75c15f40054c8717dba6efacecf76b8fef2e8b8d12275c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81a53caa94f2787b75c15f40054c8717dba6efacecf76b8fef2e8b8d12275c15", kill_on_drop: false }`
[INFO] [stdout] 81a53caa94f2787b75c15f40054c8717dba6efacecf76b8fef2e8b8d12275c15
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22d1eb9593f061ff1cc2d6901be0d0ce89b1212ce95811b0abf6171e9c61f733
[INFO] running `Command { std: "docker" "start" "-a" "22d1eb9593f061ff1cc2d6901be0d0ce89b1212ce95811b0abf6171e9c61f733", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiler_builtins v0.1.104 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/float/mod.rs:77:8
[INFO] [stdout]     |
[INFO] [stdout] 17  | pub(crate) trait Float:
[INFO] [stdout]     |                  ----- associated items in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77  |     fn eq_repr(self, rhs: Self) -> bool;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80  |     fn sign(self) -> bool;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83  |     fn exp(self) -> Self::ExpInt;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 86  |     fn frac(self) -> Self::Int;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89  |     fn imp_frac(self) -> Self::Int;
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     fn from_parts(sign: bool, exponent: Self::Int, significand: Self::Int) -> Self;
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn is_subnormal(self) -> bool;
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/float/mod.rs:77:8
[INFO] [stdout]     |
[INFO] [stdout] 17  | pub(crate) trait Float:
[INFO] [stdout]     |                  ----- associated items in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77  |     fn eq_repr(self, rhs: Self) -> bool;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80  |     fn sign(self) -> bool;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83  |     fn exp(self) -> Self::ExpInt;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 86  |     fn frac(self) -> Self::Int;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89  |     fn imp_frac(self) -> Self::Int;
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     fn from_parts(sign: bool, exponent: Self::Int, significand: Self::Int) -> Self;
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn is_subnormal(self) -> bool;
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `wrapping_neg` and `rotate_left` are never used
[INFO] [stdout]   --> src/int/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub(crate) trait Int:
[INFO] [stdout]    |                  --- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn wrapping_neg(self) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn rotate_left(self, other: u32) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `wrapping_neg` and `rotate_left` are never used
[INFO] [stdout]   --> src/int/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub(crate) trait Int:
[INFO] [stdout]    |                  --- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn wrapping_neg(self) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn rotate_left(self, other: u32) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `panic_handler`
[INFO] [stdout]   --> examples/intrinsics.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate panic_handler;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compiler_builtins` (example "intrinsics") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "22d1eb9593f061ff1cc2d6901be0d0ce89b1212ce95811b0abf6171e9c61f733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22d1eb9593f061ff1cc2d6901be0d0ce89b1212ce95811b0abf6171e9c61f733", kill_on_drop: false }`
[INFO] [stdout] 22d1eb9593f061ff1cc2d6901be0d0ce89b1212ce95811b0abf6171e9c61f733
[INFO] checking compiler_builtins-0.1.104 against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] extracting crate compiler_builtins 0.1.104 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate compiler_builtins 0.1.104 on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate compiler_builtins 0.1.104
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate compiler_builtins 0.1.104
[INFO] tweaked toml for crates.io crate compiler_builtins 0.1.104 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate compiler_builtins 0.1.104 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" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83a171daedbbe3187aa49b4565f521babb5590ff9184f16b70c1829f26479aa4
[INFO] running `Command { std: "docker" "start" "-a" "83a171daedbbe3187aa49b4565f521babb5590ff9184f16b70c1829f26479aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83a171daedbbe3187aa49b4565f521babb5590ff9184f16b70c1829f26479aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83a171daedbbe3187aa49b4565f521babb5590ff9184f16b70c1829f26479aa4", kill_on_drop: false }`
[INFO] [stdout] 83a171daedbbe3187aa49b4565f521babb5590ff9184f16b70c1829f26479aa4
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb1783f5a791a6566a99c8e0ccb2b4abb19ea3093ce052f90cdc6de8fdd96b52
[INFO] running `Command { std: "docker" "start" "-a" "fb1783f5a791a6566a99c8e0ccb2b4abb19ea3093ce052f90cdc6de8fdd96b52", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiler_builtins v0.1.104 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/float/mod.rs:77:8
[INFO] [stdout]     |
[INFO] [stdout] 17  | pub(crate) trait Float:
[INFO] [stdout]     |                  ----- associated items in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77  |     fn eq_repr(self, rhs: Self) -> bool;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80  |     fn sign(self) -> bool;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83  |     fn exp(self) -> Self::ExpInt;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 86  |     fn frac(self) -> Self::Int;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89  |     fn imp_frac(self) -> Self::Int;
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     fn from_parts(sign: bool, exponent: Self::Int, significand: Self::Int) -> Self;
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn is_subnormal(self) -> bool;
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `wrapping_neg` and `rotate_left` are never used
[INFO] [stdout]   --> src/int/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub(crate) trait Int:
[INFO] [stdout]    |                  --- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn wrapping_neg(self) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn rotate_left(self, other: u32) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/float/mod.rs:77:8
[INFO] [stdout]     |
[INFO] [stdout] 17  | pub(crate) trait Float:
[INFO] [stdout]     |                  ----- associated items in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77  |     fn eq_repr(self, rhs: Self) -> bool;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80  |     fn sign(self) -> bool;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83  |     fn exp(self) -> Self::ExpInt;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 86  |     fn frac(self) -> Self::Int;
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 89  |     fn imp_frac(self) -> Self::Int;
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |     fn from_parts(sign: bool, exponent: Self::Int, significand: Self::Int) -> Self;
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn is_subnormal(self) -> bool;
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `wrapping_neg` and `rotate_left` are never used
[INFO] [stdout]   --> src/int/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub(crate) trait Int:
[INFO] [stdout]    |                  --- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn wrapping_neg(self) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn rotate_left(self, other: u32) -> Self;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `panic_handler`
[INFO] [stdout]   --> examples/intrinsics.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate panic_handler;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compiler_builtins` (example "intrinsics") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "fb1783f5a791a6566a99c8e0ccb2b4abb19ea3093ce052f90cdc6de8fdd96b52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb1783f5a791a6566a99c8e0ccb2b4abb19ea3093ce052f90cdc6de8fdd96b52", kill_on_drop: false }`
[INFO] [stdout] fb1783f5a791a6566a99c8e0ccb2b4abb19ea3093ce052f90cdc6de8fdd96b52
