[INFO] fetching crate stream_histogram 0.1.1...
[INFO] testing stream_histogram-0.1.1 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate stream_histogram 0.1.1 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate stream_histogram 0.1.1 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linked-list v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 103216457c72cd4b58be017eda6bd3b4d461c70ab6a4722d94af97bdbc04157b
[INFO] running `Command { std: "docker" "start" "-a" "103216457c72cd4b58be017eda6bd3b4d461c70ab6a4722d94af97bdbc04157b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "103216457c72cd4b58be017eda6bd3b4d461c70ab6a4722d94af97bdbc04157b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "103216457c72cd4b58be017eda6bd3b4d461c70ab6a4722d94af97bdbc04157b", kill_on_drop: false }`
[INFO] [stdout] 103216457c72cd4b58be017eda6bd3b4d461c70ab6a4722d94af97bdbc04157b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28b78bdd5bf6959d6ec78dfbefdfbf451a804c3523e10ff1c0845ba988824579
[INFO] running `Command { std: "docker" "start" "-a" "28b78bdd5bf6959d6ec78dfbefdfbf451a804c3523e10ff1c0845ba988824579", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.108
[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 [unoptimized + debuginfo] target(s) in 3.63s
[INFO] running `Command { std: "docker" "inspect" "28b78bdd5bf6959d6ec78dfbefdfbf451a804c3523e10ff1c0845ba988824579", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28b78bdd5bf6959d6ec78dfbefdfbf451a804c3523e10ff1c0845ba988824579", kill_on_drop: false }`
[INFO] [stdout] 28b78bdd5bf6959d6ec78dfbefdfbf451a804c3523e10ff1c0845ba988824579
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 018e502160c35f24d7eec4dd91604294ae1ca65a669012367e442bb026a0cf7c
[INFO] running `Command { std: "docker" "start" "-a" "018e502160c35f24d7eec4dd91604294ae1ca65a669012367e442bb026a0cf7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling stream_histogram v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Distribution`, `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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "018e502160c35f24d7eec4dd91604294ae1ca65a669012367e442bb026a0cf7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "018e502160c35f24d7eec4dd91604294ae1ca65a669012367e442bb026a0cf7c", kill_on_drop: false }`
[INFO] [stdout] 018e502160c35f24d7eec4dd91604294ae1ca65a669012367e442bb026a0cf7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 35c4eca957b8f9a746548fe1e0352a717b315803b4e676c79407b8c4b780e0b8
[INFO] running `Command { std: "docker" "start" "-a" "35c4eca957b8f9a746548fe1e0352a717b315803b4e676c79407b8c4b780e0b8", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Distribution`, `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
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/stream_histogram-97da2f794202f65e)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_histogram ... ok
[INFO] [stdout] test tests::test_report ... ok
[INFO] [stdout] test tests::test_print ... ok
[INFO] [stdout] test tests::test_statistics_function ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[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::report (line 251) ... FAILED
[INFO] [stdout] test src/lib.rs - Histogram::add (line 61) ... 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 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 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 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 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 0.33s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "35c4eca957b8f9a746548fe1e0352a717b315803b4e676c79407b8c4b780e0b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35c4eca957b8f9a746548fe1e0352a717b315803b4e676c79407b8c4b780e0b8", kill_on_drop: false }`
[INFO] [stdout] 35c4eca957b8f9a746548fe1e0352a717b315803b4e676c79407b8c4b780e0b8