[INFO] fetching crate constriction 0.1.2...
[INFO] testing constriction-0.1.2 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate constriction 0.1.2 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate constriction 0.1.2 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-66/source/.cargo/config
[INFO] started tweaking crates.io crate constriction 0.1.2
[INFO] finished tweaking crates.io crate constriction 0.1.2
[INFO] tweaked toml for crates.io crate constriction 0.1.2 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f4fc0d97ec4e701ac26731136264dd56b74db4aaee5866bb71b458dd0ff4645
[INFO] running `Command { std: "docker" "start" "-a" "5f4fc0d97ec4e701ac26731136264dd56b74db4aaee5866bb71b458dd0ff4645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f4fc0d97ec4e701ac26731136264dd56b74db4aaee5866bb71b458dd0ff4645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f4fc0d97ec4e701ac26731136264dd56b74db4aaee5866bb71b458dd0ff4645", kill_on_drop: false }`
[INFO] [stdout] 5f4fc0d97ec4e701ac26731136264dd56b74db4aaee5866bb71b458dd0ff4645
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49acb9a462194f8041d79d5bdffa7720519b57cefe4943ea3fff33ff4a6319ce
[INFO] running `Command { std: "docker" "start" "-a" "49acb9a462194f8041d79d5bdffa7720519b57cefe4943ea3fff33ff4a6319ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling random v0.12.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling special v0.8.1
[INFO] [stderr]    Compiling probability v0.17.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling constriction v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.01s
[INFO] running `Command { std: "docker" "inspect" "49acb9a462194f8041d79d5bdffa7720519b57cefe4943ea3fff33ff4a6319ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49acb9a462194f8041d79d5bdffa7720519b57cefe4943ea3fff33ff4a6319ce", kill_on_drop: false }`
[INFO] [stdout] 49acb9a462194f8041d79d5bdffa7720519b57cefe4943ea3fff33ff4a6319ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63f899172063c807dff235fc6e5bd65ffe2cffe5c53005bbcb5a135e0c79953a
[INFO] running `Command { std: "docker" "start" "-a" "63f899172063c807dff235fc6e5bd65ffe2cffe5c53005bbcb5a135e0c79953a", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling half v1.7.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling rand_pcg v0.3.1
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling constriction v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 33.82s
[INFO] running `Command { std: "docker" "inspect" "63f899172063c807dff235fc6e5bd65ffe2cffe5c53005bbcb5a135e0c79953a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f899172063c807dff235fc6e5bd65ffe2cffe5c53005bbcb5a135e0c79953a", kill_on_drop: false }`
[INFO] [stdout] 63f899172063c807dff235fc6e5bd65ffe2cffe5c53005bbcb5a135e0c79953a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ba168862a2af81d105baa02e05ac391bf0573f317a8353a5268c4deb3137e99e
[INFO] running `Command { std: "docker" "start" "-a" "ba168862a2af81d105baa02e05ac391bf0573f317a8353a5268c4deb3137e99e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/constriction-35160313c3bcf098)
[INFO] [stdout] 
[INFO] [stdout] running 73 tests
[INFO] [stdout] test stream::chain::tests::restore_many_u16_u32_16 ... ok
[INFO] [stdout] test stream::chain::tests::restore_many_u16_u64_16 ... ok
[INFO] [stdout] test stream::chain::tests::restore_one ... ok
[INFO] [stdout] test stream::chain::tests::restore_ten ... ok
[INFO] [stdout] test stream::chain::tests::restore_none ... ok
[INFO] [stdout] test stream::chain::tests::restore_many_u16_u64_8 ... ok
[INFO] [stdout] test stream::chain::tests::restore_many_u32_u64_32 ... ok
[INFO] [stdout] test stream::chain::tests::restore_many_u16_u32_8 ... ok
[INFO] [stdout] test stream::chain::tests::restore_many_u32_u64_24 ... ok
[INFO] [stdout] test stream::chain::tests::restore_twenty ... ok
[INFO] [stdout] test stream::chain::tests::restore_many_u8_u32_8 ... ok
[INFO] [stdout] test stream::chain::tests::restore_many_u32_u64_16 ... ok
[INFO] [stdout] test stream::chain::tests::restore_two ... ok
[INFO] [stdout] test stream::chain::tests::restore_many_u32_u64_8 ... ok
[INFO] [stdout] test stream::model::tests::lookup_contiguous ... ok
[INFO] [stdout] test stream::model::tests::non_contiguous_categorical ... ok
[INFO] [stdout] test stream::model::tests::nontrivial_optimal_weights ... ok
[INFO] [stdout] test stream::model::tests::trivial_optimal_weights ... ok
[INFO] [stdout] test stream::model::tests::contiguous_categorical ... ok
[INFO] [stdout] test stream::queue::tests::compress_none ... ok
[INFO] [stdout] test stream::queue::tests::compress_one ... ok
[INFO] [stdout] test stream::queue::tests::compress_ten ... ok
[INFO] [stdout] test stream::queue::tests::compress_twenty ... ok
[INFO] [stdout] test stream::queue::tests::compress_two ... ok
[INFO] [stdout] test stream::chain::tests::restore_many_u8_u64_8 ... ok
[INFO] [stdout] test stream::model::tests::entropy ... ok
[INFO] [stdout] test stream::model::tests::lookup_noncontiguous ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u32_u64_24 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u16_u32_12 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u16_u32_8 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u16_u32_16 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u32_u64_16 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u16_u64_12 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u32_u64_32 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u16_u64_16 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u32_u64_8 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u8_u32_8 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u16_u64_8 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u8_u64_8 ... ok
[INFO] [stdout] test stream::queue::tests::compress_many_u8_u16_8 ... ok
[INFO] [stdout] test stream::stack::tests::compress_none ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u16_u32_8 ... ok
[INFO] [stdout] test stream::stack::tests::compress_one ... ok
[INFO] [stdout] test stream::stack::tests::compress_ten ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u16_u32_16 ... ok
[INFO] [stdout] test stream::stack::tests::compress_two ... ok
[INFO] [stdout] test stream::stack::tests::compress_twenty ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u16_u32_12 ... ok
[INFO] [stdout] test symbol::exp_golomb::tests::explicit_examples ... ok
[INFO] [stdout] test symbol::huffman::tests::decoder_huffman_tree ... ok
[INFO] [stdout] test symbol::tests::bit_queue ... ok
[INFO] [stdout] test symbol::huffman::tests::encoder_huffman_tree ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u16_u64_12 ... ok
[INFO] [stdout] test symbol::tests::bit_stack ... ok
[INFO] [stdout] test symbol::exp_golomb::tests::encode_decode_iid_queue ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u16_u64_16 ... ok
[INFO] [stdout] test symbol::exp_golomb::tests::encode_decode_iid_stack ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u32_u64_16 ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u32_u64_24 ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u16_u64_8 ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u32_u64_32 ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u8_u16_8 ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u32_u64_8 ... ok
[INFO] [stdout] test symbol::tests::encode_decode_iid_queue ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u8_u64_8 ... ok
[INFO] [stdout] test stream::stack::tests::compress_many_u8_u32_8 ... ok
[INFO] [stdout] test symbol::tests::encode_decode_iid_stack ... ok
[INFO] [stdout] test backends::tests::decode_on_the_fly_stack ... FAILED
[INFO] [stdout] test stream::model::tests::leakily_quantized_normal ... ok
[INFO] [stdout] test stream::queue::tests::seek ... ok
[INFO] [stdout] test symbol::tests::encode_decode_non_iid ... ok
[INFO] [stdout] test stream::stack::tests::seek ... ok
[INFO] [stdout] test stream::model::tests::leakily_quantized_binomial ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- backends::tests::decode_on_the_fly_stack stdout ----
[INFO] [stdout] thread 'backends::tests::decode_on_the_fly_stack' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }', src/backends.rs:1847:85
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x557517e02830 - std::backtrace_rs::backtrace::libunwind::trace::hff4d1766e93f64f1
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x557517e02830 - std::backtrace_rs::backtrace::trace_unsynchronized::h56bbc8eb78770bcb
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x557517e02830 - std::sys_common::backtrace::_print_fmt::h5c8e75464faca780
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x557517e02830 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h48b88277def8b362
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x557517e251ec - core::fmt::write::h3381b3176fe2b3d3
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/fmt/mod.rs:1115:17
[INFO] [stdout]    5:     0x557517dff795 - std::io::Write::write_fmt::h5f34a676f60246b5
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/io/mod.rs:1665:15
[INFO] [stdout]    6:     0x557517e049ab - std::sys_common::backtrace::_print::ha537687d6c17dd0d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x557517e049ab - std::sys_common::backtrace::print::h61376ae57d131d72
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x557517e049ab - std::panicking::default_hook::{{closure}}::h0f7208c0b9644a54
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x557517e044bc - std::panicking::default_hook::hdac7fc06578c14ce
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:222:9
[INFO] [stdout]   10:     0x557517e05074 - std::panicking::rust_panic_with_hook::h72b21c283da3d1ef
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x557517e04b57 - std::panicking::begin_panic_handler::{{closure}}::he5778f1729cff84a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x557517e02d0c - std::sys_common::backtrace::__rust_end_short_backtrace::h2d11ca8b453b4b1d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x557517e04ab9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x557517b85431 - core::panicking::panic_fmt::hf9de31d4acbce4db
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x557517b85523 - core::result::unwrap_failed::ha0c84e81219e5878
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/result.rs:1599:5
[INFO] [stdout]   16:     0x557517c0c8ee - core::result::Result<T,E>::unwrap::ha7a5b6a71b991d3d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/result.rs:1281:23
[INFO] [stdout]   17:     0x557517cfab30 - constriction::backends::tests::decode_on_the_fly_stack::encode_to_file::h17657d19c72dc004
[INFO] [stdout]                                at /opt/rustwide/workdir/src/backends.rs:1847:43
[INFO] [stdout]   18:     0x557517cfa90b - constriction::backends::tests::decode_on_the_fly_stack::h186d7475c238c64b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/backends.rs:1888:9
[INFO] [stdout]   19:     0x557517cfa8ea - constriction::backends::tests::decode_on_the_fly_stack::{{closure}}::he3e6e880a2ba53bd
[INFO] [stdout]                                at /opt/rustwide/workdir/src/backends.rs:1833:5
[INFO] [stdout]   20:     0x557517d03f6e - core::ops::function::FnOnce::call_once::hfac42b582e07eee5
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   21:     0x557517dcfb13 - core::ops::function::FnOnce::call_once::hbb52c4519d3137b0
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   22:     0x557517dcfb13 - test::__rust_begin_short_backtrace::h86fe3a2a5a5121af
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:578:5
[INFO] [stdout]   23:     0x557517dce5c8 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hfd956bc3d57399be
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   24:     0x557517dce5c8 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40dc93e0ddb5938a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:347:9
[INFO] [stdout]   25:     0x557517dce5c8 - std::panicking::try::do_call::h90d07750cb47c562
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stdout]   26:     0x557517dce5c8 - std::panicking::try::h063c84733ad2a629
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stdout]   27:     0x557517dce5c8 - std::panic::catch_unwind::h0c464836a84e7c08
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stdout]   28:     0x557517dce5c8 - test::run_test_in_process::h5cb06ef620b157fc
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:601:18
[INFO] [stdout]   29:     0x557517dce5c8 - test::run_test::run_test_inner::{{closure}}::h76f677f4b93f9828
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:493:39
[INFO] [stdout]   30:     0x557517d9cd5d - test::run_test::run_test_inner::{{closure}}::h366d01fe04f4d67a
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/test/src/lib.rs:520:37
[INFO] [stdout]   31:     0x557517d9cd5d - std::sys_common::backtrace::__rust_begin_short_backtrace::h7dfa0de4eb395af2
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stdout]   32:     0x557517da1528 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hf0a74bb58798037f
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/thread/mod.rs:476:17
[INFO] [stdout]   33:     0x557517da1528 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb024e854818586ac
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:347:9
[INFO] [stdout]   34:     0x557517da1528 - std::panicking::try::do_call::hb2dd9f1d0d48e41d
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stdout]   35:     0x557517da1528 - std::panicking::try::h4717ae7bac8b2bf3
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stdout]   36:     0x557517da1528 - std::panic::catch_unwind::h0dc8a061326ce8d8
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stdout]   37:     0x557517da1528 - std::thread::Builder::spawn_unchecked::{{closure}}::haa369e2d6fd00aa1
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/thread/mod.rs:475:30
[INFO] [stdout]   38:     0x557517da1528 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h36dcf3de8b056f17
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   39:     0x557517e09d97 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h65c29e4642be2358
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   40:     0x557517e09d97 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd0f8f7fbbd9fffbf
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   41:     0x557517e09d97 - std::sys::unix::thread::Thread::new::thread_start::h2fd22fee3ca77b65
[INFO] [stdout]                                at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys/unix/thread.rs:74:17
[INFO] [stdout]   42:     0x7fa311810609 - start_thread
[INFO] [stdout]   43:     0x7fa3115e2293 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     backends::tests::decode_on_the_fly_stack
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 72 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.76s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] running `Command { std: "docker" "inspect" "ba168862a2af81d105baa02e05ac391bf0573f317a8353a5268c4deb3137e99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba168862a2af81d105baa02e05ac391bf0573f317a8353a5268c4deb3137e99e", kill_on_drop: false }`
[INFO] [stdout] ba168862a2af81d105baa02e05ac391bf0573f317a8353a5268c4deb3137e99e
