[INFO] crate bigmaths 0.0.2 is already in cache
[INFO] testing bigmaths-0.0.2 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate bigmaths 0.0.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate bigmaths 0.0.2 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate bigmaths 0.0.2
[INFO] finished tweaking crates.io crate bigmaths 0.0.2
[INFO] tweaked toml for crates.io crate bigmaths 0.0.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6f02cfdcdcc0c6f8e74cce28bda833a986e5f686ef960b3795bbe313e18b2ccd
[INFO] running `"docker" "start" "-a" "6f02cfdcdcc0c6f8e74cce28bda833a986e5f686ef960b3795bbe313e18b2ccd"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bigmaths v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:189:26
[INFO] [stderr]     |
[INFO] [stderr] 189 |                     let (mut modulus, final_carry) = limb_pairs_iter.fold((Vec::with_capacity(self.len() + 1), false), |(mut limbs, carry), (&self_limb, &other_limb)| {
[INFO] [stderr]     |                          ----^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `"docker" "inspect" "6f02cfdcdcc0c6f8e74cce28bda833a986e5f686ef960b3795bbe313e18b2ccd"`
[INFO] running `"docker" "rm" "-f" "6f02cfdcdcc0c6f8e74cce28bda833a986e5f686ef960b3795bbe313e18b2ccd"`
[INFO] [stdout] 6f02cfdcdcc0c6f8e74cce28bda833a986e5f686ef960b3795bbe313e18b2ccd
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0b6321aee1feeef139f1d19ffd4b00cff73f5d9316e700a8742d510568b5f7b1
[INFO] running `"docker" "start" "-a" "0b6321aee1feeef139f1d19ffd4b00cff73f5d9316e700a8742d510568b5f7b1"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bigmaths v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:189:26
[INFO] [stderr]     |
[INFO] [stderr] 189 |                     let (mut modulus, final_carry) = limb_pairs_iter.fold((Vec::with_capacity(self.len() + 1), false), |(mut limbs, carry), (&self_limb, &other_limb)| {
[INFO] [stderr]     |                          ----^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:189:26
[INFO] [stderr]     |
[INFO] [stderr] 189 |                     let (mut modulus, final_carry) = limb_pairs_iter.fold((Vec::with_capacity(self.len() + 1), false), |(mut limbs, carry), (&self_limb, &other_limb)| {
[INFO] [stderr]     |                          ----^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "0b6321aee1feeef139f1d19ffd4b00cff73f5d9316e700a8742d510568b5f7b1"`
[INFO] running `"docker" "rm" "-f" "0b6321aee1feeef139f1d19ffd4b00cff73f5d9316e700a8742d510568b5f7b1"`
[INFO] [stdout] 0b6321aee1feeef139f1d19ffd4b00cff73f5d9316e700a8742d510568b5f7b1
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e81603ba7ccca562bba0ce73ead633dff391caaba454560bc1c175389f11f2d5
[INFO] running `"docker" "start" "-a" "e81603ba7ccca562bba0ce73ead633dff391caaba454560bc1c175389f11f2d5"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:189:26
[INFO] [stderr]     |
[INFO] [stderr] 189 |                     let (mut modulus, final_carry) = limb_pairs_iter.fold((Vec::with_capacity(self.len() + 1), false), |(mut limbs, carry), (&self_limb, &other_limb)| {
[INFO] [stderr]     |                          ----^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:189:26
[INFO] [stderr]     |
[INFO] [stderr] 189 |                     let (mut modulus, final_carry) = limb_pairs_iter.fold((Vec::with_capacity(self.len() + 1), false), |(mut limbs, carry), (&self_limb, &other_limb)| {
[INFO] [stderr]     |                          ----^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bigmaths-4215ab6c173ca9c9
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test tests::bigint_add_little_two_neg ... ok
[INFO] [stdout] test tests::bigint_sub_big_two_pos ... ok
[INFO] [stdout] test tests::bigint_add_big_pos_and_neg ... ok
[INFO] [stdout] test tests::bigint_sub_big_pos_and_neg ... ok
[INFO] [stdout] test tests::bigint_add_little_pos_and_neg ... ok
[INFO] [stdout] test tests::bigint_from_max_isize ... ok
[INFO] [stdout] test tests::bigint_from_min_isize ... ok
[INFO] [stdout] test tests::bigint_add_big_two_neg ... ok
[INFO] [stdout] test tests::bigint_add_little_two_pos ... ok
[INFO] [stdout] test tests::bigint_sub_big_two_neg ... ok
[INFO] [stdout] test tests::bigint_from_zero_isize ... ok
[INFO] [stdout] test tests::bigint_from_and_to_isize ... ok
[INFO] [stdout] test tests::bigint_from_negative_isize ... ok
[INFO] [stdout] test tests::bigint_sub_little_two_neg ... ok
[INFO] [stdout] test tests::bigint_sub_little_pos_and_neg ... ok
[INFO] [stdout] test tests::bigint_from_positive_isize ... ok
[INFO] [stdout] test tests::bigint_add_big_two_pos ... ok
[INFO] [stdout] test tests::bigint_sub_little_two_pos ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bigmaths
[INFO] [stdout] 
[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] running `"docker" "inspect" "e81603ba7ccca562bba0ce73ead633dff391caaba454560bc1c175389f11f2d5"`
[INFO] running `"docker" "rm" "-f" "e81603ba7ccca562bba0ce73ead633dff391caaba454560bc1c175389f11f2d5"`
[INFO] [stdout] e81603ba7ccca562bba0ce73ead633dff391caaba454560bc1c175389f11f2d5