[INFO] fetching crate stream_histogram 0.1.1...
[INFO] testing stream_histogram-0.1.1 against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate stream_histogram 0.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate stream_histogram 0.1.1
[INFO] finished tweaking crates.io crate stream_histogram 0.1.1
[INFO] tweaked toml for crates.io crate stream_histogram 0.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stream_histogram 0.1.1 on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] [stderr]       Adding linked-list v0.0.3 (available: v0.1.0)
[INFO] [stderr]       Adding rand v0.5.6 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9c21dbaaa9f2a31b3ab329694be2a0d6461219ea45bab420c6e2a9bc257f45f
[INFO] running `Command { std: "docker" "start" "-a" "e9c21dbaaa9f2a31b3ab329694be2a0d6461219ea45bab420c6e2a9bc257f45f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9c21dbaaa9f2a31b3ab329694be2a0d6461219ea45bab420c6e2a9bc257f45f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9c21dbaaa9f2a31b3ab329694be2a0d6461219ea45bab420c6e2a9bc257f45f", kill_on_drop: false }`
[INFO] [stdout] e9c21dbaaa9f2a31b3ab329694be2a0d6461219ea45bab420c6e2a9bc257f45f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 394f363a87fa775d9eaa8652d683b6d3c8b69791f4cce440c2b2f003cb49ce86
[INFO] running `Command { std: "docker" "start" "-a" "394f363a87fa775d9eaa8652d683b6d3c8b69791f4cce440c2b2f003cb49ce86", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling linked-list v0.0.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling stream_histogram v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.65s
[INFO] running `Command { std: "docker" "inspect" "394f363a87fa775d9eaa8652d683b6d3c8b69791f4cce440c2b2f003cb49ce86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "394f363a87fa775d9eaa8652d683b6d3c8b69791f4cce440c2b2f003cb49ce86", kill_on_drop: false }`
[INFO] [stdout] 394f363a87fa775d9eaa8652d683b6d3c8b69791f4cce440c2b2f003cb49ce86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2920d12069c75bacee389e89fc5f95ddea97e4df7b2ee11ffb25642d1c39efe
[INFO] running `Command { std: "docker" "start" "-a" "e2920d12069c75bacee389e89fc5f95ddea97e4df7b2ee11ffb25642d1c39efe", kill_on_drop: false }`
[INFO] [stderr]    Compiling stream_histogram v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Distribution` and `Normal`
[INFO] [stdout]    --> src/lib.rs:296:31
[INFO] [stdout]     |
[INFO] [stdout] 296 |     use rand::distributions::{Distribution, Normal};
[INFO] [stdout]     |                               ^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "e2920d12069c75bacee389e89fc5f95ddea97e4df7b2ee11ffb25642d1c39efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2920d12069c75bacee389e89fc5f95ddea97e4df7b2ee11ffb25642d1c39efe", kill_on_drop: false }`
[INFO] [stdout] e2920d12069c75bacee389e89fc5f95ddea97e4df7b2ee11ffb25642d1c39efe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c66db0c8cb72f841560eff7266c3909eb5c6d59f56e420caf1c8839ff7fefb4c
[INFO] running `Command { std: "docker" "start" "-a" "c66db0c8cb72f841560eff7266c3909eb5c6d59f56e420caf1c8839ff7fefb4c", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Distribution` and `Normal`
[INFO] [stderr]    --> src/lib.rs:296:31
[INFO] [stderr]     |
[INFO] [stderr] 296 |     use rand::distributions::{Distribution, Normal};
[INFO] [stderr]     |                               ^^^^^^^^^^^^  ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `stream_histogram` (lib test) generated 1 warning (run `cargo fix --lib -p stream_histogram --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stream_histogram-90f3f2e2009d3442)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_print ... ok
[INFO] [stdout] test tests::test_report ... ok
[INFO] [stdout] test tests::test_statistics_function ... ok
[INFO] [stdout] test tests::test_histogram ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stream_histogram
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - Histogram::to_string (line 225) ... FAILED
[INFO] [stdout] test src/lib.rs - Histogram::add (line 61) ... FAILED
[INFO] [stdout] test src/lib.rs - Histogram::report (line 251) ... FAILED
[INFO] [stdout] test src/lib.rs - Histogram::new (line 34) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Histogram::to_string (line 225) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `crate::histogram`
[INFO] [stdout]  --> src/lib.rs:227:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |  use crate::histogram::Histogram;
[INFO] [stdout]   |             ^^^^^^^^^ could not find `histogram` in the crate root
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Histogram::add (line 61) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `crate::histogram`
[INFO] [stdout]  --> src/lib.rs:62:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::histogram::Histogram;
[INFO] [stdout]   |            ^^^^^^^^^ could not find `histogram` in the crate root
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Histogram::report (line 251) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `crate::histogram`
[INFO] [stdout]  --> src/lib.rs:252:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::histogram::Histogram;
[INFO] [stdout]   |            ^^^^^^^^^ could not find `histogram` in the crate root
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Histogram::new (line 34) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `crate::histogram`
[INFO] [stdout]  --> src/lib.rs:35:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::histogram::Histogram;
[INFO] [stdout]   |            ^^^^^^^^^ could not find `histogram` in the crate root
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Histogram::add (line 61)
[INFO] [stdout]     src/lib.rs - Histogram::new (line 34)
[INFO] [stdout]     src/lib.rs - Histogram::report (line 251)
[INFO] [stdout]     src/lib.rs - Histogram::to_string (line 225)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "c66db0c8cb72f841560eff7266c3909eb5c6d59f56e420caf1c8839ff7fefb4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c66db0c8cb72f841560eff7266c3909eb5c6d59f56e420caf1c8839ff7fefb4c", kill_on_drop: false }`
[INFO] [stdout] c66db0c8cb72f841560eff7266c3909eb5c6d59f56e420caf1c8839ff7fefb4c
