[INFO] fetching crate extrema 0.1.1...
[INFO] testing extrema-0.1.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate extrema 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate extrema 0.1.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate extrema 0.1.1
[INFO] finished tweaking crates.io crate extrema 0.1.1
[INFO] tweaked toml for crates.io crate extrema 0.1.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdf0350dab886611e083e131254685b82ef6d5ba28e4ff292a2e6235fa1e4b2c
[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" "fdf0350dab886611e083e131254685b82ef6d5ba28e4ff292a2e6235fa1e4b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdf0350dab886611e083e131254685b82ef6d5ba28e4ff292a2e6235fa1e4b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdf0350dab886611e083e131254685b82ef6d5ba28e4ff292a2e6235fa1e4b2c", kill_on_drop: false }`
[INFO] [stdout] fdf0350dab886611e083e131254685b82ef6d5ba28e4ff292a2e6235fa1e4b2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fad60a1bd0fa95f63fce8e57fc6b4380dc0e8298bc709f7b780a23d99037340e
[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" "fad60a1bd0fa95f63fce8e57fc6b4380dc0e8298bc709f7b780a23d99037340e", kill_on_drop: false }`
[INFO] [stderr]    Compiling extrema v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "fad60a1bd0fa95f63fce8e57fc6b4380dc0e8298bc709f7b780a23d99037340e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fad60a1bd0fa95f63fce8e57fc6b4380dc0e8298bc709f7b780a23d99037340e", kill_on_drop: false }`
[INFO] [stdout] fad60a1bd0fa95f63fce8e57fc6b4380dc0e8298bc709f7b780a23d99037340e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21fc2dcd96ffcb9cf32c703dc7f2bb6cf9209752464d8f81919c030affcc0f4a
[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" "21fc2dcd96ffcb9cf32c703dc7f2bb6cf9209752464d8f81919c030affcc0f4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling extrema v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "21fc2dcd96ffcb9cf32c703dc7f2bb6cf9209752464d8f81919c030affcc0f4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21fc2dcd96ffcb9cf32c703dc7f2bb6cf9209752464d8f81919c030affcc0f4a", kill_on_drop: false }`
[INFO] [stdout] 21fc2dcd96ffcb9cf32c703dc7f2bb6cf9209752464d8f81919c030affcc0f4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ddcc81aa784306e45719ec9ee1b20fdd45d5e50294a7c8c744503421d514d62a
[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" "ddcc81aa784306e45719ec9ee1b20fdd45d5e50294a7c8c744503421d514d62a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/extrema-1223b11f194a713a)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests extrema
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - Extrema::extrema (line 32) ... FAILED
[INFO] [stdout] test src/lib.rs - Extrema::extrema (line 24) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 7) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Extrema::extrema (line 32) stdout ----
[INFO] [stdout] error[E0599]: no method named `extrema` found for reference `&Vec<{integer}>` in the current scope
[INFO] [stdout]  --> src/lib.rs:34:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | let minmax = (&xs).extrema(); // or xs[..].extrema(), xs.iter().extrema()  
[INFO] [stdout]   |                    ^^^^^^^ method not found in `&Vec<{integer}>`
[INFO] [stdout]   |
[INFO] [stdout]   = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::extrema::Extrema;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Extrema::extrema (line 24) stdout ----
[INFO] [stdout] error[E0599]: no method named `extrema` found for struct `Vec<{integer}>` in the current scope
[INFO] [stdout]   --> src/lib.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 5  | let minmax = xs.extrema();
[INFO] [stdout]    |                 ^^^^^^^ method not found in `Vec<{integer}>`
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/workdir/src/lib.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn extrema(self) -> Option<(Self::Item, Self::Item)>;
[INFO] [stdout]    |        ------- the method is available for `Vec<{integer}>` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 3  | use crate::extrema::Extrema;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 7) stdout ----
[INFO] [stdout] error[E0412]: cannot find type `HashSet` in this scope
[INFO] [stdout]  --> src/lib.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | let my_set: HashSet<i32> = (1..300).collect();
[INFO] [stdout]   |             ^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashSet;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 7)
[INFO] [stdout]     src/lib.rs - Extrema::extrema (line 24)
[INFO] [stdout]     src/lib.rs - Extrema::extrema (line 32)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "ddcc81aa784306e45719ec9ee1b20fdd45d5e50294a7c8c744503421d514d62a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddcc81aa784306e45719ec9ee1b20fdd45d5e50294a7c8c744503421d514d62a", kill_on_drop: false }`
[INFO] [stdout] ddcc81aa784306e45719ec9ee1b20fdd45d5e50294a7c8c744503421d514d62a