[INFO] crate numtraits 0.0.1 is already in cache
[INFO] testing numtraits-0.0.1 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate numtraits 0.0.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate numtraits 0.0.1 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate numtraits 0.0.1
[INFO] finished tweaking crates.io crate numtraits 0.0.1
[INFO] tweaked toml for crates.io crate numtraits 0.0.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffbb2683e25fb624d5dd85aac0b96b34476947d9cdcf73157bc7f34ce88b0097
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ffbb2683e25fb624d5dd85aac0b96b34476947d9cdcf73157bc7f34ce88b0097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffbb2683e25fb624d5dd85aac0b96b34476947d9cdcf73157bc7f34ce88b0097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffbb2683e25fb624d5dd85aac0b96b34476947d9cdcf73157bc7f34ce88b0097", kill_on_drop: false }`
[INFO] [stdout] ffbb2683e25fb624d5dd85aac0b96b34476947d9cdcf73157bc7f34ce88b0097
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c11d472e8632d3c13f0fbba568b4907ab58e4f89546ca5926bfaac0deac0bc1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6c11d472e8632d3c13f0fbba568b4907ab58e4f89546ca5926bfaac0deac0bc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling numtraits v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/lib.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | / macro_rules! from_to {
[INFO] [stdout] 51 | |     ($tr:ident, $f:ident, $t:ident) => {
[INFO] [stdout] 52 | |         impl $tr<$f> for $t {
[INFO] [stdout] 53 | |             fn from(x: $f) -> $t { x as $t }
[INFO] [stdout] 54 | |         }
[INFO] [stdout] 55 | |     }
[INFO] [stdout] 56 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "6c11d472e8632d3c13f0fbba568b4907ab58e4f89546ca5926bfaac0deac0bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c11d472e8632d3c13f0fbba568b4907ab58e4f89546ca5926bfaac0deac0bc1", kill_on_drop: false }`
[INFO] [stdout] 6c11d472e8632d3c13f0fbba568b4907ab58e4f89546ca5926bfaac0deac0bc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d9b06325cbc038ccda4ed776a8f1e85b99d60dcb1cf805d97aae0493b0f76fd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9d9b06325cbc038ccda4ed776a8f1e85b99d60dcb1cf805d97aae0493b0f76fd", kill_on_drop: false }`
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/lib.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | / macro_rules! from_to {
[INFO] [stdout] 51 | |     ($tr:ident, $f:ident, $t:ident) => {
[INFO] [stdout] 52 | |         impl $tr<$f> for $t {
[INFO] [stdout] 53 | |             fn from(x: $f) -> $t { x as $t }
[INFO] [stdout] 54 | |         }
[INFO] [stdout] 55 | |     }
[INFO] [stdout] 56 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling numtraits v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/lib.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | / macro_rules! from_to {
[INFO] [stdout] 51 | |     ($tr:ident, $f:ident, $t:ident) => {
[INFO] [stdout] 52 | |         impl $tr<$f> for $t {
[INFO] [stdout] 53 | |             fn from(x: $f) -> $t { x as $t }
[INFO] [stdout] 54 | |         }
[INFO] [stdout] 55 | |     }
[INFO] [stdout] 56 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `doit`
[INFO] [stdout]    --> src/lib.rs:121:4
[INFO] [stdout]     |
[INFO] [stdout] 121 | fn doit<T: UpCastAs<u64>>() {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "9d9b06325cbc038ccda4ed776a8f1e85b99d60dcb1cf805d97aae0493b0f76fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d9b06325cbc038ccda4ed776a8f1e85b99d60dcb1cf805d97aae0493b0f76fd", kill_on_drop: false }`
[INFO] [stdout] 9d9b06325cbc038ccda4ed776a8f1e85b99d60dcb1cf805d97aae0493b0f76fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 11f550a803b33be693804427176ce1e90a15176276650df1e7a031bc42a8663d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "11f550a803b33be693804427176ce1e90a15176276650df1e7a031bc42a8663d", kill_on_drop: false }`
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lib.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | / macro_rules! from_to {
[INFO] [stderr] 51 | |     ($tr:ident, $f:ident, $t:ident) => {
[INFO] [stderr] 52 | |         impl $tr<$f> for $t {
[INFO] [stderr] 53 | |             fn from(x: $f) -> $t { x as $t }
[INFO] [stderr] 54 | |         }
[INFO] [stderr] 55 | |     }
[INFO] [stderr] 56 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lib.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | / macro_rules! from_to {
[INFO] [stderr] 51 | |     ($tr:ident, $f:ident, $t:ident) => {
[INFO] [stderr] 52 | |         impl $tr<$f> for $t {
[INFO] [stderr] 53 | |             fn from(x: $f) -> $t { x as $t }
[INFO] [stderr] 54 | |         }
[INFO] [stderr] 55 | |     }
[INFO] [stderr] 56 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `doit`
[INFO] [stderr]    --> src/lib.rs:121:4
[INFO] [stderr]     |
[INFO] [stderr] 121 | fn doit<T: UpCastAs<u64>>() {
[INFO] [stderr]     |    ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/numtraits-bbca8f893dc82206
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests numtraits
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 43) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 18) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 4) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 32) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 43) stdout ----
[INFO] [stdout] error[E0405]: cannot find trait `UpCastAs` in this scope
[INFO] [stdout]  --> src/lib.rs:44:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn example<T: UpCastAs<u32>>() {
[INFO] [stdout]   |               ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0405`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 18) stdout ----
[INFO] [stdout] error[E0405]: cannot find trait `UpCastAs` in this scope
[INFO] [stdout]  --> src/lib.rs:19:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn example<T: UpCastAs<u32>>() {
[INFO] [stdout]   |               ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:20:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let _: T = cast(10u8);
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:21:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let _ = cast::<u8, T>(10u8); // Alternate syntax, uglier.
[INFO] [stdout]   |             ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:22:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let _: T = cast(10u16);
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:23:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let _: T = cast(10u32);
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:24:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let _: T = cast(10u64); // Error, u64 > u32
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]  --> src/lib.rs:25:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let _: T = cast(10f32); // Error, f32 > u32
[INFO] [stdout]   |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `cast` in this scope
[INFO] [stdout]   --> src/lib.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let _: T = cast(10f64); // Error, f32 > u32
[INFO] [stdout]    |                ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0425.
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 4) stdout ----
[INFO] [stdout] error: comparison operators cannot be chained
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |     ^     ^
[INFO] [stdout]   |
[INFO] [stdout]   = help: use `::<...>` instead of `<...>` to specify type arguments
[INFO] [stdout]   = help: or use `(...)` if you meant to specify fn arguments
[INFO] [stdout] help: split the comparison into two
[INFO] [stdout]   |
[INFO] [stdout] 3 | f64 > f32 && f32 > u64 > u32 > u16 > u8
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 32) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `UpCastAs`
[INFO] [stdout]  --> src/lib.rs:34:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let _: T = UpCastAs::from(10u8);
[INFO] [stdout]   |                ^^^^^^^^ use of undeclared type or module `UpCastAs`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `UpCastAs`
[INFO] [stdout]  --> src/lib.rs:35:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let _: T = UpCastAs::from(10u16);
[INFO] [stdout]   |                ^^^^^^^^ use of undeclared type or module `UpCastAs`
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `UpCastAs` in this scope
[INFO] [stdout]  --> src/lib.rs:33:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn example<T: UpCastAs<u32>>() {
[INFO] [stdout]   |               ^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 18)
[INFO] [stdout]     src/lib.rs - (line 32)
[INFO] [stdout]     src/lib.rs - (line 4)
[INFO] [stdout]     src/lib.rs - (line 43)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "11f550a803b33be693804427176ce1e90a15176276650df1e7a031bc42a8663d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11f550a803b33be693804427176ce1e90a15176276650df1e7a031bc42a8663d", kill_on_drop: false }`
[INFO] [stdout] 11f550a803b33be693804427176ce1e90a15176276650df1e7a031bc42a8663d