[INFO] fetching crate ticklock 0.0.8...
[INFO] checking ticklock-0.0.8 against try#169954edd744527414c631e9af1bbdc537b0cdf2 for pr-75192
[INFO] extracting crate ticklock 0.0.8 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ticklock 0.0.8 on toolchain 169954edd744527414c631e9af1bbdc537b0cdf2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ticklock 0.0.8
[INFO] finished tweaking crates.io crate ticklock 0.0.8
[INFO] tweaked toml for crates.io crate ticklock 0.0.8 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c5c0c55399d6a92e78cb7ceccebb85b6058f0598cb16ca2a95b381d8842a2b7
[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" "2c5c0c55399d6a92e78cb7ceccebb85b6058f0598cb16ca2a95b381d8842a2b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c5c0c55399d6a92e78cb7ceccebb85b6058f0598cb16ca2a95b381d8842a2b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c5c0c55399d6a92e78cb7ceccebb85b6058f0598cb16ca2a95b381d8842a2b7", kill_on_drop: false }`
[INFO] [stdout] 2c5c0c55399d6a92e78cb7ceccebb85b6058f0598cb16ca2a95b381d8842a2b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42b83bca36b58eccaaa71f6a9c46cd7fd1673237bbcf37ad22e0e742a4b39fd8
[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" "42b83bca36b58eccaaa71f6a9c46cd7fd1673237bbcf37ad22e0e742a4b39fd8", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking ticklock v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/clock.rs:258:22
[INFO] [stdout]     |
[INFO] [stdout] 258 |         assert_eq!(2.clamp(1, 3), 2);
[INFO] [stdout]     |                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]     = warning: once this method 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 `clock::U32Ext::clamp(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(clamp)]` to the crate attributes to enable `core::cmp::Ord::clamp`
[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/clock.rs:259:23
[INFO] [stdout]     |
[INFO] [stdout] 259 |         assert_eq!(20.clamp(1, 3), 3);
[INFO] [stdout]     |                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method 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 `clock::U32Ext::clamp(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(clamp)]` to the crate attributes to enable `core::cmp::Ord::clamp`
[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/clock.rs:260:22
[INFO] [stdout]     |
[INFO] [stdout] 260 |         assert_eq!(0.clamp(1, 3), 1);
[INFO] [stdout]     |                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this method 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 `clock::U32Ext::clamp(...)` to keep using the current method
[INFO] [stdout]     = help: add `#![feature(clamp)]` to the crate attributes to enable `core::cmp::Ord::clamp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `Command { std: "docker" "inspect" "42b83bca36b58eccaaa71f6a9c46cd7fd1673237bbcf37ad22e0e742a4b39fd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42b83bca36b58eccaaa71f6a9c46cd7fd1673237bbcf37ad22e0e742a4b39fd8", kill_on_drop: false }`
[INFO] [stdout] 42b83bca36b58eccaaa71f6a9c46cd7fd1673237bbcf37ad22e0e742a4b39fd8