[INFO] fetching crate amplify_num 0.1.1...
[INFO] checking amplify_num-0.1.1 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate amplify_num 0.1.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate amplify_num 0.1.1 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate amplify_num 0.1.1
[INFO] finished tweaking crates.io crate amplify_num 0.1.1
[INFO] tweaked toml for crates.io crate amplify_num 0.1.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fc3bcdab524cf968843fdcaf91e11afb9ff592505c7a45296df1b816fa42bb06
[INFO] running `Command { std: "docker" "start" "-a" "fc3bcdab524cf968843fdcaf91e11afb9ff592505c7a45296df1b816fa42bb06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc3bcdab524cf968843fdcaf91e11afb9ff592505c7a45296df1b816fa42bb06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc3bcdab524cf968843fdcaf91e11afb9ff592505c7a45296df1b816fa42bb06", kill_on_drop: false }`
[INFO] [stdout] fc3bcdab524cf968843fdcaf91e11afb9ff592505c7a45296df1b816fa42bb06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1882fa5564305894318c7cdda88cb13d2280c0bbd88d9f5d8518f05d4ded5a8f
[INFO] running `Command { std: "docker" "start" "-a" "1882fa5564305894318c7cdda88cb13d2280c0bbd88d9f5d8518f05d4ded5a8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking amplify_num v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/bigint.rs:960:13
[INFO] [stdout]     |
[INFO] [stdout] 960 |             format!("{}", max_val),
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/bigint.rs:949:13
[INFO] [stdout]     |
[INFO] [stdout] 949 |             format!("{}", u256::from(::core::u64::MAX)),
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `format` in this scope
[INFO] [stdout]    --> src/bigint.rs:945:13
[INFO] [stdout]     |
[INFO] [stdout] 945 |             format!("{}", u256::from(0xDEADBEEFu64)),
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `amplify_num`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "1882fa5564305894318c7cdda88cb13d2280c0bbd88d9f5d8518f05d4ded5a8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1882fa5564305894318c7cdda88cb13d2280c0bbd88d9f5d8518f05d4ded5a8f", kill_on_drop: false }`
[INFO] [stdout] 1882fa5564305894318c7cdda88cb13d2280c0bbd88d9f5d8518f05d4ded5a8f