[INFO] fetching crate currency 0.4.0...
[INFO] testing currency-0.4.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate currency 0.4.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate currency 0.4.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate currency 0.4.0
[INFO] finished tweaking crates.io crate currency 0.4.0
[INFO] tweaked toml for crates.io crate currency 0.4.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 26beb77181256e952b78c057aeb6bd84a0cb12978d69bf79dbd4d38c5acbe78a
[INFO] running `Command { std: "docker" "start" "-a" "26beb77181256e952b78c057aeb6bd84a0cb12978d69bf79dbd4d38c5acbe78a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26beb77181256e952b78c057aeb6bd84a0cb12978d69bf79dbd4d38c5acbe78a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26beb77181256e952b78c057aeb6bd84a0cb12978d69bf79dbd4d38c5acbe78a", kill_on_drop: false }`
[INFO] [stdout] 26beb77181256e952b78c057aeb6bd84a0cb12978d69bf79dbd4d38c5acbe78a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcbeec7ed9cb217401d1d15bc3b9b5600e5bbc48c9f90e81a7b0986646935ad3
[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" "bcbeec7ed9cb217401d1d15bc3b9b5600e5bbc48c9f90e81a7b0986646935ad3", kill_on_drop: false }`
[INFO] [stderr]    Compiling currency v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BigUint` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:85:27
[INFO] [stdout]    |
[INFO] [stdout] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stdout]    |                           ------- the item `BigUint` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sign` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:85:36
[INFO] [stdout]    |
[INFO] [stdout] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stdout]    |                                    ---- the item `Sign` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stdout]    |                                    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "bcbeec7ed9cb217401d1d15bc3b9b5600e5bbc48c9f90e81a7b0986646935ad3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcbeec7ed9cb217401d1d15bc3b9b5600e5bbc48c9f90e81a7b0986646935ad3", kill_on_drop: false }`
[INFO] [stdout] bcbeec7ed9cb217401d1d15bc3b9b5600e5bbc48c9f90e81a7b0986646935ad3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--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] 7a791b13b24fe21470782aa5ca4989bbbb1b8f9bf84b1c0a9ad571cc6ebe4c33
[INFO] running `Command { std: "docker" "start" "-a" "7a791b13b24fe21470782aa5ca4989bbbb1b8f9bf84b1c0a9ad571cc6ebe4c33", kill_on_drop: false }`
[INFO] [stderr]    Compiling currency v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BigUint` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:85:27
[INFO] [stdout]    |
[INFO] [stdout] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stdout]    |                           ------- the item `BigUint` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sign` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:85:36
[INFO] [stdout]    |
[INFO] [stdout] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stdout]    |                                    ---- the item `Sign` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stdout]    |                                    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BigUint` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:85:27
[INFO] [stdout]    |
[INFO] [stdout] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stdout]    |                           ------- the item `BigUint` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sign` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:85:36
[INFO] [stdout]    |
[INFO] [stdout] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stdout]    |                                    ---- the item `Sign` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stdout]    |                                    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]    --> src/lib.rs:752:13
[INFO] [stdout]     |
[INFO] [stdout] 752 |         use std::str::FromStr;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "7a791b13b24fe21470782aa5ca4989bbbb1b8f9bf84b1c0a9ad571cc6ebe4c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a791b13b24fe21470782aa5ca4989bbbb1b8f9bf84b1c0a9ad571cc6ebe4c33", kill_on_drop: false }`
[INFO] [stdout] 7a791b13b24fe21470782aa5ca4989bbbb1b8f9bf84b1c0a9ad571cc6ebe4c33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", 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] e4bb0a2a7a00e1e71cdec9d826f9293b0195928ded04e121c11354a10c7ca67d
[INFO] running `Command { std: "docker" "start" "-a" "e4bb0a2a7a00e1e71cdec9d826f9293b0195928ded04e121c11354a10c7ca67d", kill_on_drop: false }`
[INFO] [stderr] warning: the item `BigUint` is imported redundantly
[INFO] [stderr]   --> src/lib.rs:85:27
[INFO] [stderr]    |
[INFO] [stderr] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stderr]    |                           ------- the item `BigUint` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stderr]    |                           ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Sign` is imported redundantly
[INFO] [stderr]   --> src/lib.rs:85:36
[INFO] [stderr]    |
[INFO] [stderr] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stderr]    |                                    ---- the item `Sign` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stderr]    |                                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: the item `BigUint` is imported redundantly
[INFO] [stderr]   --> src/lib.rs:85:27
[INFO] [stderr]    |
[INFO] [stderr] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stderr]    |                           ------- the item `BigUint` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stderr]    |                           ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Sign` is imported redundantly
[INFO] [stderr]   --> src/lib.rs:85:36
[INFO] [stderr]    |
[INFO] [stderr] 46 | use num::bigint::{BigInt, BigUint, Sign};
[INFO] [stderr]    |                                    ---- the item `Sign` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 85 |         use num::bigint::{BigUint, Sign};
[INFO] [stderr]    |                                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]    --> src/lib.rs:752:13
[INFO] [stderr]     |
[INFO] [stderr] 752 |         use std::str::FromStr;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/currency-78cbc6fc9a3761ea
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test tests::test_add_commutative ... ok
[INFO] [stdout] test tests::test_eq ... ok
[INFO] [stdout] test tests::test_ord ... ok
[INFO] [stdout] test tests::test_sub ... ok
[INFO] [stdout] test tests::test_mul ... ok
[INFO] [stdout] test tests::test_display ... ok
[INFO] [stdout] test tests::test_mul_commutative ... ok
[INFO] [stdout] test tests::test_neg ... ok
[INFO] [stdout] test tests::test_foreign_display ... ok
[INFO] [stdout] test tests::test_div ... ok
[INFO] [stdout] test tests::test_convert ... ok
[INFO] [stderr]    Doc-tests currency
[INFO] [stdout] test tests::test_add ... ok
[INFO] [stdout] test tests::test_from_str ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - Currency (line 312) ... ok
[INFO] [stdout] test src/lib.rs - Currency::value (line 166) ... ok
[INFO] [stdout] test src/lib.rs - Currency::convert (line 190) ... ok
[INFO] [stdout] test src/lib.rs - Currency (line 218) ... ok
[INFO] [stdout] test src/lib.rs - Currency::from_str (line 76) ... ok
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e4bb0a2a7a00e1e71cdec9d826f9293b0195928ded04e121c11354a10c7ca67d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4bb0a2a7a00e1e71cdec9d826f9293b0195928ded04e121c11354a10c7ca67d", kill_on_drop: false }`
[INFO] [stdout] e4bb0a2a7a00e1e71cdec9d826f9293b0195928ded04e121c11354a10c7ca67d